Catalyst tube
[化] 催化剂管
🧩 词语组成解析
🗣️ 情景例句
Remember to lock your door and windows when you leave the house.
出门前记得锁好门窗。
Then,I shave,brush my teeth and comb my hair.
然后，我刮胡子，刷牙并梳头。
She spent a lot of money on books.
她花了很多钱来买书。