Put your lap trays and seat backs in the upright and locked position.

放好你的膝上托盘，并将座椅调到直立和锁定座椅位置。

He pledged to walk 100 laps in his garden, and online donations went viral.

他承诺在自己的花园走100圈，在线捐款火热。

And I came up with the idea of walking a lap of the M25 in the snow in January.

于是我想到了在下雪的一月里围着M25走一圈。

Every morning she swims 50 laps in the pool.

【lap】她每天早上都要在游泳池里游 50 个来回。

The researchers knew that interpreting responses would be difficult, since dogs tend to whine, nuzzle, lick, lay their heads in laps and fetch toys for people in distress.

他们深知想要解读狗的反应是十分困难的，因为狗在这种条件下经常会发出呜呜声，把鼻子贴在人的大腿上并蹭蹭舔舔，还会在人类悲伤时叼来玩具哄人开心。