He lets me ride up and down in the chair.

他让我在椅子上上上下下。

youdao

This hill is too steep to ride up on a bicycle.

这山太陡了，骑自行车可上不去。

youdao

This hill's too steep to ride up.

这座山太陡了，骑马上不去。

youdao

This hill's too steep to ride up.

这座山太陡了，骑马上不去。

youdao