Petroleum refining catalysts
[化] 石油炼制催化剂
🧩 词语组成解析
[计] 精炼, 提纯\\n[化] 精炼; 精制; 提炼; 匀料; 匀浆
n. <化>催化剂( catalyst的复数形式 ); 触媒; 促进因素; 有感染力的人
🗣️ 情景例句
Yes, I worked in a fashion shop last summer as parttime sales girl.
有，去年夏天，我曾在一家时装店任兼职售货员。
No one (or man) is born wise or learned.
人非生而知之者。
How long are you staying in Xi'an?
你要在西安呆多久？