When you want to enjoy some cool wireless broadband but the coverage of your area is not that good you gotta invent something else to help you achieve the strength of the signal.

当你想享受一些很酷的无线宽带而你所在区域的信号覆盖并不理想时，你就得捣鼓些别的东西来帮助你实现信号的加强。

youdao

Sometimes apologies are offered not to make amends with victims but to signal to an external audience that one is a good person.

有时给予道歉并不是为了向受害者赔罪，而是为了向旁观者表明自己是个好人。

youdao

AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.

VOA: special.2010.12.08

But even here there is a signal to be read: the signal of a person who is not very good at managing signals.

FORBES: The Business of Nonverbal Communication: How Signals Reflect Your Brand