他突然想到，这个男孩正在学飞——或者说，是学走路。

It occurred to him that this boy was learning to fly—or rather to walk.

youdao

古斯塔夫正在费力地走路，我会这么说因为他上气不接下气的。

Gustaf is walking uphill; I can tell because he's out of breath.

youdao

这个阶段的孩子可以自如地走路，同时正在努力认知自身在空间中的位置。

Now we are walking confidently and are learning about "our place in space".

youdao

他正在跑步，他没在走路。

He's running. He isn't walking.

youdao

他正在跑步，他没在走路。

He's running. He isn't walking.

youdao