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1·At the age of thirty-one, Florence went to Germany and learned all about nursing.

三十一岁时，弗洛伦斯去了德国，学习了所有关于护理的知识。

2·There are about thirty-one million blacks in the U.S.

美国大约有三千一百万黑人。《柯林斯英汉双解大词典》

3·In America, people are faced with more and more decisions every day, whether it's picking one of thirty-one ice cream flavors, or deciding whether and when to get married.

在美国，人们每天都面临着越来越多的决定，无论是从31种冰淇淋口味中选择一种，还是决定是否结婚和何时结婚。

4·All the rest have thirty-one except February alone.

除了二月其余的有三十一天。

5·You can look at page thirty-one in the Hughes edition.

你们可以看到休斯版本的31页。

6·He was thirty-one now, not too old, but old enough to be lonely.

他现在31岁了，不太老，但已经感受到孤独了。

7·She stayed by his side for thirty-one years, until his death in 1917.

她在他的身边待了三十一年，直到他于1917年死去。

8·One hundred and thirty-one cases have been laboratory confirmed.

131例已经实验室确诊。

9·In Iran, in the past thirty-one years we had about thirty elections.

而在伊朗，过去31年我们举行了30次选举。

10·Anna: Well... I'm thirty years old. I'll be thirty-one in September.

安娜：嗯……我三十岁了。九月份我就三十一岁了。