I'm an eighteen-year-old Australian girl.

我是个十八岁的澳洲姑娘。

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Eighteen-year-old Xinyi Wang’s bus rolled up to Memorial Union on an August night.

一个八月的夜晚，十八岁的王欣怡（音译）乘坐的大巴到达纪念联盟门口。

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Now contrast that with the marriage of two eighteen-year-olds who have just discovered the woman is pregnant.

与之对比的是一对18岁的夫妇的婚姻，他们刚刚离婚，女方已经怀孕。

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In one study,American researchers examined MySpace pages belonging to five hundred eighteen year-olds from the United States.

VOA: special.2009.02.03

Now, you have to understand that when you buy a bond, if you buy it at issue, you get the first coupon in six months, the second coupon in one year, the third coupon in eighteen months, and the last coupon you get at the maturity date.

你们需要了解,如果在发行时就购入债券,六个月后会得到第一笔票息,一年后第二笔,18个月后第三笔,到期时得到最后一笔票息

耶鲁公开课 - 金融市场课程节选

Eighteen year old slam poet Safia Elhillo deals with another serious issue in her poem, "Immigrant City."

VOA: special.2009.04.17

Eighteen-year-old Bieber recently won three prizes, including artist of the year, at the American Music Awards.

BBC: Justin Bieber's manager: Grammys 'blew it' over snub

Eighteen-year-old Mashadi is typical: Her father died four years ago, leaving her mother as the sole breadwinner.

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Eighteen-year-old Nicanor Mabao was one of the three who survived what scientists call a phreatic, or steam-driven, explosion.

WSJ: Guides Recall Escape From Philippine Volcano