Three boys lean over an upside-down mountain bike, turn the pedal back, spin it.

三个男孩伏在一个颠倒的山地自行车踏板转回去，旋转。

youdao

I'll hold the back of the bike while you pedal.

你踩脚踏车时，我会在后面扶着。

youdao

I'll hold the back of the bike while you pedal.

你踩脚踏车时，我会在后面扶着。

youdao