平躺曲膝。

Lie flat and let your knees bend.

《牛津词典》

然后站起来足尖着地做一些曲膝动作。

Then stand up and do some knee raises and toe touches.

youdao

要记住曲膝，这样就不会伤到背部。

And make sure you bend your knees so you don't hurt your back.

youdao

在每个夜晚，我都会曲膝在她的床前。

As I drop to my knees by her bed at night.

youdao

你要做到的是双膝微曲的紧张踢腿。

You want to keep your kick tight and small with slight knee bend.

youdao

你要做到的是双膝微曲的紧张踢腿。

You want to keep your kick tight and small with slight knee bend.

youdao