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1·Twenty percent of the students don't exercise at all.

百分之二十的同学一点也不锻炼。

2·Twenty percent of us exercise only one to three times a week.

百分之二十的人一周只锻炼一到三次。

3·Twenty percent do not exercise at all. but we think the best way to relax is through exercise.

百分之二十的人根本不锻炼，但是我们认为最好的放松方式是锻炼。

4·Wages have fallen by more than twenty percent during the past two months.

在过去的两个月期间工资已下降了二十多个百分点。《柯林斯英汉双解大词典》

5·According to his research, with each new generation, average IQ scores would increase by twenty percent.

根据他的研究，每出生一代，平均智商分数就会提高20%。

6·Twenty percent of the products are exported.

百分之二十的产品外销。

7·Twenty percent of pregnant women also suffer from RLS.

两成的孕妇也患有RLS。

8·Twenty percent of the passengers on the bus are American.

公共汽车上百分之二十的乘客是美国人。

9·The price of residential property has risen almost twenty percent.

房屋价格上涨了将近20%。

10·Wheat prices have risen one hundred twenty percent in the past year.

小麦价格在去年上涨了120%。