She let her head drop.

她把头垂了下来。

《柯林斯英汉双解大词典》

Try to toss the ball into the same spot every time? Let your racket head drop behind you and then hit the ball suddenly.

尽量在发球时每次都把球抛到相同的位置，然后将球拍举到头后方，瞬间击球。

youdao

Try to toss the ball into the same spot every time? Let your racket head drop behind you and then hit the ball suddenly.

尽量在发球时每次都把球抛到相同的位置，然后将球拍举到头后方，瞬间击球。

youdao