That may be a hint that yawn evolved as a social cue—"time for us all to go to bed".

也许这是打哈欠进化为社交线索的一种暗示——“到我们大家睡觉的时间了”。

youdao

Every time you feel the cue for a snack, insert another routine.

每当你想吃点东西的时候，就去干点别的事情。

youdao

That may be a hint that the action evolved as a social cue - "time for us all to go to bed" - although as usual when evolution and human behaviour meet, the tie is speculative at best.

也许这是打哈欠进化为社交线索的一种暗示——“到我们大家睡觉的时间了”——不过，像往常一样，当进化和人类行为相遇时，推测充其量只是纽带。

youdao

The goal will be to hit the cue ball one time and have all the balls go in the pocket.

NEWYORKER: Shifting Targets

You can configure four different triggers at one time, controlling cue points, looping and so on.

ENGADGET

But after 300 sessions spread over the course of a year, two of Dr Birbaumer's patients were able to put out signals on cue three-quarters of the time.

ECONOMIST: Neurology