You see my tongue. It's kind of bending up, " one" . " Nice one."

你看我的舌头。它有点弯曲，one。Nice one.

But it's not like that in the sea. It can angle and bend up to 90 degrees.

但在海里可是两码事。它可以以任意角度并且弯曲到90度。

You may have seen airplane wings bending up and down during turbulence.

您可能已经看到飞机机翼在湍流中上下弯曲。

For more leverage, I can tent the right fingertips here, maybe bend that right elbow up to find a little bit more in that upper back.

为了利用杠杆原理对上背部做到更大程度的练习，我可以把右手的指尖搭在这里，也许可以把右手肘向上弯曲。

It can be safe as long as the swaddling allows a baby's legs to bend up and out at the hips, allowing the hip joints to develop normally.

只要能保证襁褓让宝宝的腿部可以弯曲并且臀部位置合适，臀部骨关节能够正常发育，那就是安全的。

His stiff leg, flat and scarred at the knee, was stretched out in front of him, the other leg bent up and his forehead resting against it.

他僵硬的腿在他面前伸直， 膝盖处伤痕累累， 扁平，另一条腿弯曲， 额头靠在上面。