当调用者调用代理时，您可以在调用真实方法前，轻松添加您需要的任何定制特性。

When the caller invokes the proxy, you're free to add any custom features you may require before invoking the real method.

youdao

本系列的 前两期 研究了 R 在 “真实环境” 中的使用方法。

The first two installments of this series looked at R in fairly "real world" usage.

youdao

这是40年前海地的写照，同样也是今天许多地方的真实写照。

True of Haiti 40 years ago, still true of too many places today.

youdao

There are lots of people who have pointed out to us that before a certain period, there was no such thing as man, and in a variety of quite real senses, after a certain moment in the history of culture, there is also no such thing as man.

很多人向我们指出,在某一特定时间点前是没有人类的，而且在真实意义上，在文化史中的某一特定时刻后，人类也不存在。

耶鲁公开课 - 文学理论导论课程节选