Then draw a line, as you see in the image below.

然后以此为限，正如你看到在下面的图片。

youdao

So we have h, then we can draw our bond as a line.

那么我们有氢，可以把我们的键画成一条线。

youdao

Then you can draw a line.

然后你画一条线。

youdao

Then you can draw a line.

然后你画一条线。

youdao