词典释义：
a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the centre)
圆。
the line enclosing such a figure
圆周。
something in the shape of such a figure
圈，环状物
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the lamp spread a circle of light .灯洒下一圈光芒。
a group of people or things arranged to form such a figure
一圈（人或物）
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they all sat round in a circle .他们围成一圈坐。
a movement or series of movements which follows the approximate circumference of such a figure
一圈（动作或系列动作）
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describing a large circle, she arrived back at the camp .她走了一大圈，又回到露营地。
a dark circular mark below each eye, typically caused by illness or tiredness
（尤指疾病、疲劳导致的）黑眼圈。
a curved upper tier of seats in a theatre or cinema
（戏院、影院的）楼厅。参见<Bold>DRESS CIRCLE</Bold>.
【考古】 <Bold>STONE CIRCLE</Bold>的简称。
【曲棍球】 <Bold>STRIKING CIRCLE</Bold>的简称。
a group of people with a shared profession, interests, or acquaintances
（具有共同职业、利益、熟人的）圈子，集团
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she did not normally move in such exalted circles .她平常不在这样的高层圈子里活动。
move all the way around (someone or something), especially more than once and in the air
（尤指在空中多次）环绕（某人，某物）
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they were circling Athens airport 他们绕着雅典机场飞行
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[as adj.
circling ]a circling helicopter 一架盘旋的直升飞机
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[no obj.]
we circled round the island .我们环岛而行。
[no obj.](
绕圈折返。
(often
将…环绕
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the abbey was circled by a huge wall .修道院为一道高墙所围绕。
draw a line around
画圈
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circle the correct answers .圈出正确答案。
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circle the wagons N .Amer .informal （of a group） unite in defence of a common interest 〈北美，非正式〉 （集团）为保障共同利益团结起来 -
［ORIGIN with reference to the defensive position of a wagon train under attack．］
come （或turn ）full circle return to a past position or situation, especially in a way considered to be inevitable （尤指不可避免地）兜了一圈，仍回到原位 -
go round in circles informal do something for a long time without achieving anything but purposeless repetition 〈非正式〉 在原地兜圈子；长时间反复进行毫无进展the discussion went round and round in circles . 长时间反复讨论毫无进展 -
run round in circles informal be fussily busy with little result 〈非正式〉 空忙；无事忙 -
the wheel has turned （或come ）full circle the situation has returned to what it was in the past, as if completing a cycle 事情转了一大圈，还是回到了原来的样子 -
［ORIGIN with reference to Shakespeare's
King Lear , by association with the wheel fabled to be turned by Fortune and representing mutability．］
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a circle of sth 一圈...
真题例句：
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in circles 绕圈子
真题例句：
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circle of life 生活圈子
真题例句：
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friend circles 朋友圈子
真题例句：
"Old English, from Old French
