词典释义：
smooth and even; without marked lumps or indentations
光滑均匀的；平整的
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a flat wall 一面光滑的墙
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trim the surface of the cake to make it completely flat .修整蛋糕的表面，使之完全变平。
(of land)without hills
（陆地）平坦的
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thirty-five acres of flat countryside .３５英亩平坦的乡野。
(of an expanse of water)calm and without waves
（水面）平静的，波澜不兴的。
not sloping
无坡度的，平坦的
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the flat roof of a garage .车库的平屋顶。
having a broad level surface but little height or depth; shallow
低的；扁的；浅的
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a flat rectangular box 一个长方形的扁盒子
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a flat cap .一顶扁帽。
(of shoes)without heels or with very low heels
（鞋）平跟的；低跟的。
lacking interest or emotion; dull and lifeless
缺少兴趣（或感情）的，平板的；了无生气的，沉闷的
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‘I'm sorry,’ he said, in a flat voice 他说了声“很抱歉，”语气平板
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her drawings were flat and unimaginative .她的画平淡无奇，缺乏想像。
(of a person)without energy; dispirited
（人）没精打采的；颓废的，情绪低落的
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his sense of intoxication wore off until he felt flat and weary .他的陶醉感渐渐消失，终于，他感到没精打采，疲惫不堪。
(of a market, prices, etc.)not showing much activity; sluggish
（市场、价格等）疲软的，萧条的
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turnover was flat at ￡3.
2 m 交易疲软，仅为320万英镑
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flat sales in the drinks industry .饮料业疲软的销售。
(of a sparkling drink)having lost its effervescence
（充气饮料）走了气的，不起泡的。
〈英〉 （蓄电池）无电的，电力不足的。
(of something kept inflated, especially a tyre)having lost some or all of its air, typically because of a puncture
（尤指轮胎等膨胀物因刺穿而）漏气的；没气的
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you've got a flat tyre .您的轮胎没气了。
(of a colour)uniform
（颜色）无层次的，无变化的
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the dress was a deadly, flat shade of grey .那件衣服是单一的灰色，令人生厌。
(of a photographic print or negative)lacking contrast
（照片，底片）无深浅对比的，无明暗的。
[attrib.](of a fee, wage, or price)the same in all cases, not varying with changed conditions or in particular cases
（费用、薪资或价格）固定不变的
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a 10p flat fare .10便士的固定交通费。参见<Bold>FLAT RATE</Bold>.
(of a denial, contradiction, or refusal)completely definite and firm; absolute
（否认、反驳或拒绝）断然的；绝对的，不容置疑的
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his statement was a flat denial that he had misbehaved .他的声明断然否认了自己行为不端。
(of musical sound)below true or normal pitch
（乐音）降音的。
[postpositive](of a key)having a flat or flats in the signature
（音调）注有降音符的。
[postpositive](of a note)a semitone lower than a specified note
（音调）降半音的
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E flat .降E调。
(
（关于）无障碍平地赛马的
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the Flat season .无障碍平地赛马季节。
in or to a horizontal position
水平地
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he was lying flat on his back 他仰面平躺着
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she had been knocked flat by the blast .她当时被冲击波撞倒在地，直挺挺地躺在那里。
lying in close juxtaposition, especially against another surface
平贴着
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his black curly hair was blown flat across his skull .他卷曲的黑发被风吹得平贴在头顶上。
so as to become smooth and even
平整地
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I hammered the metal flat .我用铁锤把那块金属敲平了。
〈非正式〉 彻底地；断然地
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I'm turning you down flat 我是在断然拒绝你
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[as submodifier]
she was going to be flat broke in a couple of days .几天后她就会彻底破产。
after a phrase expressing a period of time to emphasize how quickly something can be done or has been done
仅仅，只（用在时间后强调动作迅速）
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you can prepare a healthy meal in ten minutes flat .只需十分钟您便能做好一顿健康餐。
below the true or normal pitch of musical sound
以低音
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it wasn't a question of singing flat, but of simply singing the wrong notes .问题不是调子唱低了，而是干脆就唱跑了调。
[in sing.]the flat part of something
平坦处
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she placed the flat of her hand over her glass .她用手掌盖住自己的玻璃杯。
a flat object, in particular
扁平物，尤指：
(常作
（安装在活动框架上的）景片，背景屏。
〈非正式〉 漏气轮胎。
〈北美〉 浅箱，浅苗床。
(常作
〈主美〉 低跟鞋；平跟鞋。
a railway wagon with a flat floor and no sides or roof; a flatcar
平板列车；敞车；平台货车。
(一般作
（尤指近水）低地；浅滩，沙洲
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the shingle flats of the lake .湖畔的鹅卵石浅滩。参见<Bold>MUDFLAT</Bold>.
(
〈英〉 无障碍平地赛马。
a musical note lowered a semitone below natural pitch
降半音。
the sign (♭) indicating this
降半音的音符。
[usu. as adj.
【乐】 〈北美〉 把（音调）降半音
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‘blue' harmony emphasizing the flatted third and seventh .强调降半音C调和G调的“蓝调”和声。
〈古〉 使平整；使单调
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flat the loaves down .把烤肉块放平整。
〈主英〉 （带有厨房和浴室的）公寓，单元房
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a block of flats .一幢公寓楼。
〈澳／新西兰〉 住公寓；与人合住一套公寓
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my sister Zoë flats in Auckland .我姐姐佐伊住在奥克兰的一套公寓里。
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fall flat fail completely to produce the intended or expected effect完全失败，达不到预期效果his jokes fell flat . 他的笑话都没能引人发笑 -
fall flat on one's face fall over forwards向前跌倒 -
figurative fail in an embarrassingly obvious way〈喻〉 脸面丧尽the president could fall flat on his face if the economy doesn't start improving soon . 如果经济不能很快开始好转的话，总统就可能丧尽脸面 -
（
as） flat as a pancake 见PANCAKE .flat out 1 as fast or as hard as possible尽可能快；尽最大努力，竭尽全力the whole team is working flat out to satisfy demand 整个团队正竭尽全力来满足需求 ［as adj.flat-out ］the album lacks the flat-out urgency of its predecessor . 这张专辑不像上一张那样急于出版 -
２ informal ,chiefly N. Amer. without hesitation or reservation; unequivocally 〈非 正式，主北美〉 毅然地，果断地；毫无保留地；毫不含糊地in those early days I'd just flat out vote against foreign aid 在最初的那些日子，我只能毫不含糊地投票反对外来援助 ［as adj.flat-out ］flat-out perjury . 不折不扣的伪证 -
3 lying completely stretched out, especially asleep or exhausted（尤指熟睡或疲惫时）四肢摊开she was lying flat out on her pink bath towel . 她舒展全身，躺在粉红色的浴巾上 -
on the flat on level ground as opposed to uphill在平地上the car wouldn't go uphill or overtake on the flat . 这辆车既不会爬坡上坎，也不会平地超车 -
（
on the Flat ） （of a horse race） on an open course as opposed to one with jumps（赛马）在无障碍平地上的 -
that's flat informal used to indicate that one has reached a decision and will not be persuaded to change one's mind〈非正式〉 绝对如此（用来表示作了决定而且不会改弦更张）he won't go into a home and that's flat . 他不愿成家，绝对如此
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flat out 全力以赴
真题例句：
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lie flat 平躺
真题例句：
"Middle English： from Old Norse
