正当他们在走路的时候。

As they are walking.

youdao

小企鹅慢慢地能出来走路了，这时候他们身上的毛是灰的。

Little penguins slowly can walk by themselves now. At this time, they had grey fur.

youdao

小企鹅慢慢地能出来走路了，这时候他们身上的毛是灰的。

Little penguins slowly can walk by themselves now. At this time, they had grey fur.

youdao