她阅读的速度比他快一倍。 ?。

She can read twice as fast as he does.

youdao

这种新潜艇可以比旧型号快一倍。

The new submarine is able to dive twice as fast as the older model.

youdao

他跑步比他妹妹快一倍。

He runs twice as fast as his sister.

youdao

他跑步比他妹妹快一倍。

He runs twice as fast as his sister.

youdao