Catalyst tube
[化] 催化剂管
🧩 词语组成解析
🗣️ 情景例句
We have four people in the family, my parents, my elder brother and I.
我家有 4 口人，我的父母，我的哥哥和我。
This area is noted for its rich soil.
这个地区以土壤肥沃着称。
Hello. Capital Buses.
喂，首都公共汽车公司。