他准有九十岁了.He must be going on for ninety.老人已经九十岁了,手术后能活下来真是幸运.The old man was 90 years old and lucky to come through his operation.撒拉已经九十岁了,她还能生孩子 吗 ?Can Sarah bear a son when she is ninety?...

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她十九岁时就失了身.She was 19 when she lost her virginity.当比尔十九岁时, 他就开始发胖.When Bill was nineteen, he began to fill out.十九岁的年轻人的冲动会很自然地使他看不到别的.The youthful infatuation of nineteen would naturally blind him to everything....