Then, draw a medium gray inner bottom border.

然后，以此为中度灰内底边界。

youdao

Reach through the bottom half of the inner tube and grab the top half.

从低下的一半内胎穿过并抓住上面一半。

youdao

Reach through the bottom half of the inner tube and grab the top half.

从低下的一半内胎穿过并抓住上面一半。

youdao