The theoretical background of equivalence principle is briefly given, and the experimental tests of the equivalence principle is discussed in detail, via free-fall method and torsion balance.

本文简要阐述等效原理的研究背景，通过对自由落体法和扭秤法检验等效原理的详细介绍来具体讨论等效原理的实验检验。

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Mrs. Luo finds the new method can let students not fall behind times.

罗老师发现这个新方法可以让学生不落后于时代。

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These fall into three categories: method call transformations, field access transformations, and a new object transformation.

转换类型可分为三类：方法调用转换、字段访问转换和新对象转换。

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If we want to receive the recognition we deserve, we must fall into that top 8 percent of the workforce, regardless of the method employers implement to measure, rank, and rate their employees.

FORBES: The Average Raise Next Year Will Be 2.9 Percent

Moreover, as the chart shows, the rate of change has speeded up over the course of that period. (The sudden fall-off at the end is caused because the linkage-disequilibrium method cannot easily detect very recent mutations, rather than by a sudden reduction in the rate of evolution.) The researchers put this acceleration down to two things.

ECONOMIST: Human evolution

For compatibility, view controllers that still implement the shouldAutorotateToInterfaceOrientation: method do not get the new autorotation behaviors. (In other words, they do not fall back to using the app, app delegate, or Info.plist file to determine the supported orientations.) Instead, the shouldAutorotateToInterfaceOrientation: method is used to synthesize the information that would be returned by thesupportedInterfaceOrientations method.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog