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英文中,年龄前加in,at
1)表示“在某人几十多岁”,用“in ones +基数词复数形式”
例如:
He is in his seventies.(从70岁到79岁之间)
2) at the age of
例如,:Later,at 7 years old,I went to a primary school near my home.后来我七岁的时候去了附近的一所小学 was orphaned at 7 years old.雷锋7岁成为孤儿.
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