Regular airlines may offer special rates if you book your flights in advance and fly on certain days of the week when they don't expect to have full planes.

如果你提前订好机票，并且在一周中预计不会满员的特定日子乘机出行，通常情况下，航空公司都会提供特价。

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This makes them more likely to drop out, explains William Bowen, a former president of Princeton, who co-wrote a book on completion rates.

普林斯顿大学前校长威廉·鲍文认为，正是因为准备不足让学生们更容易在大学半途辍学。 威廉鲍文去年10月（译者加）刚与另外两位作者合作出版了一本关于大学毕业率的书。

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These leveraging equations describe how the two types of leverage affect book rates of return on equity.

这两个杠杆方程序描写两种杠杆如何影响帐簿资产净值回报率。

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Many of the beneficial elements of market determined rates are explained in my book How an Economy Grows and Why it Crashes.

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In addition, in many parts of the world illiteracy rates for women are well over 50 percent, according to the CIA World Fact Book.

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