39
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39%是化学工业在使用。
Thirty-nine percent was used by the chemical industry.
我读的第一本英文小说是《39级台阶》。
The first English novel that I read was Thirty-nine Steps.
我快39岁了，我已经开始提出长久的计划，比如说结婚。
I'm about to turn thirty-nine, and I have started bringing up the idea of long-term plans, like, say, marriage.
39%的美国人都曾经历过办公室恋情，其中有25%的人最后步入婚姻的殿堂。
Thirty-nine percent of Americans have at some point had a workplace romance, and 25% of these relationships resulted in marriage.
Fleischman说专家组强烈反对在39周之前进行这样的干预，除非万不得已。
Doctor Fleischman says the group strongly advises against these interventions before thirty-nine weeks unless medically necessary.
39是38与40之间的自然数。 39还是奇数、合数。 质因数分解3×13 罗马数字XXXIX 二进制表示100111 八进制表示47 十六进制表示27
39（三十九）是38与40之间的自然数,单数，实数。
