The LOGGING constant in Listing 1 should be TRUE if you want this logging to work, but leave it FALSE when it is running on the cell phone, as the performance hit can be significant.

如果希望启用这个日志记录功能，那么 清单 1 中的 LOGGING 常量应当为 TRUE，但是如果是在手机上运行的话，应当将其设为 FALSE，因为性能损失是非常明显的。

youdao

If you will not be reading from the PSVI, set this feature to false to avoid generating PSVI. This will improve your application's performance when it performs schema validation.

如果不打算从PS VI中读取信息，可以将该特性设为false，避免生成PSVI，这样可以提高应用程序执行模式验证时的性能。

youdao

He says paying may improve performance in the short term, but students develop false expectations for the future.

他说，短期来看用钱来奖励能改善状况，但是学生会对未来抱有错误的期待。

youdao

Fido can pick up the smell of TNTvapor at concentrations of just a few parts per trillion, and it was the first sensor to find buried mines at a level comparable to dog performance, with a false-alarm rate of less than 5%.

FORBES: A Nose For Bombs

Acumen accepts that the use of performance indicators can provide a false sense of precision.

ECONOMIST: Face value

By a vote of 90 to 7, the Senate rejected his argument that he should not be convicted because filing a false return was irrelevant to his performance as a judge.

CNN: Sen. Gorton's closed-door impeachment statement