词典释义：
equivalent to the product of three and three; one more than eight, or one less than ten; 9
九；九个
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nine European countries 九个欧洲国家
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nine of the twelve members .12个成员中的9个。(Roman numeral: <Bold>ix</Bold> or <Bold>IX</Bold>. 罗马数字:<Bold>ix</Bold> 或<Bold>IX</Bold>.)
a group or unit of nine individuals
九个一组。
nine years old
九岁
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I was only nine .那时我只有九岁。
nine o'clock
九点钟
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it's ten to nine .现在是９点差１０分。
a size of garment or other merchandise denoted by nine
（衣服等商品的）九号。
a playing card with nine pips.
九点的纸牌。
(
【希腊神话】 缪斯九女神。
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dressed to （或〈英〉up to ）the nines dressed very smartly or elaborately 打扮得非常漂亮 -
nine tenths nearly all 几乎全部 -
nine times out of ten on nearly every occasion; almost always. 十之八九
"Old English
