她说黑人中支持民主党的人数比例从百分之九十下降到大约百分之七十。

She says blacks who identify with the Democratic Party have fallen from the 90th percentile down to around 70 percent.

《柯林斯英汉双解大词典》

在正常情况下，只有约百分之二十到百分之四十的维生素E被吸收。

Under normal conditions, only about 20 to 40 percent of vitamin E is absorbed.

《柯林斯英汉双解大词典》

科技已经消除了我们生活中的许多苦力工作，我们比以往任何时候都更自由：我们可以穿自己喜欢的衣服，点击一下鼠标就可以与数百个朋友交流。

Technology has cut out much of life's donkeywork, and we have more freedoms than ever: we can wear what we like and communicate with hundreds of friends at once at the click of a mouse.

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