Perlite
n. [地]珍珠岩
🗣️ 情景例句
I'm so glad you found the bag and took the time and trouble to return it.
我很高兴你发现了旅行袋而且不怕麻烦花时间将它送来。
I know the boy whose father is a pilot.
我知道那个男孩的父亲是飞行员。
I just didn't wish to put you to the trouble of changing a large note.
只不过我不想麻烦你破开一张大票子罢了。