Use some glue to stick the ceramic tiles together.

加一些墙面胶，把瓷砖和墙面贴合在一起。

youdao

First, use some glue to stick the cardboard boxes together.

首先，用胶水把纸壳盒粘起来。

youdao

If you don't use glue, when you finish the guitar, you put the string, you will find some places sound good, and some places... nothing.

如果你不使用胶，当你完成吉他装上弦时，你会发现有些地方声音很好，有些地方…声音不对。

youdao