Smile at people that you meets. It does not cause you one cent, but it sends out signal, it multiples by returning to you as positive attitudes.

在您遇见的人的微笑。 它不导致您一分，但是它派出信号，它倍数通过返回到您作为积极态度。

youdao

At the entrance, they brush past reserve foragers, sending a "go out" signal.

在入口处，它们掠过觅食者，发出“出去”的信号。

youdao

If something goes wrong—a hungry lizard prowling around for an ant snack, for instance—then a rush of ants returning without food sends waiting reserves a "Don't go out" signal.

如果出了什么问题——比如，一只饥饿的蜥蜴在四处寻找蚂蚁作为零食——那么一群没有食物的蚂蚁就会匆匆归来，给等待的蚂蚁发出“不要出去”的信号。

youdao

"The Ady Gil then put out a distress signal, a mayday signal, which was ignored and not acknowledged by the Japanese and then they sped away from the scene of this incident."

VOA: standard.2010.01.06

"One of the jobs of the president, whether you are named Bush or Obama, is to go out there and reassure people and to show you are in charge and to send a signal to potential enemies out there that this will not be tolerated by any American leader, and they did not project that power effectively,".

VOA: standard.2010.01.06

Some poor soul needs to comb through these alerts and figure out the signal from the noise.

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Once plugged into a computer, the device sends out a signal pinpointing its location and the thief's IP address.

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Instead of quickly sending out a signal to disable pirated access cards, DirecTV management waited for the company's weekly disabling blast.

FORBES: Magazine Article