Catalyst pretreatment
[建] 催化剂预处理
🧩 词语组成解析
n. 预处理\\n[化] 前处理; 预处理
🗣️ 情景例句
Things look black.
前途暗淡。
I have so much to do after I retire.
我在退休后有许多事要做。
We often call him by his nickname.
我们经常叫他的绰号。