Catalyst tube
[化] 催化剂管
🧩 词语组成解析
🗣️ 情景例句
All students without exception must take the English examination.
所有学生毫无例外地都必须参加英语考试。
If the hen does not prate,she will not lay.
不叨叨的母鸡不下蛋。
The pirates would often bury gold in the cave and then fail to collect it.
海盗们过去常把金子埋藏在那个洞里，可后来却没能取走。