Raschig ring
[化] 拉西环
🧩 词语组成解析
ring
[riŋ]
n. 戒指，指环;铃声，钟声;环形物;拳击场;
vt. 形成环状;环绕;使（例如铃）响;打电话给;
vi. 按铃，敲钟;回响;成环形;
🗣️ 情景例句
My company was the contractor.
我的公司承包了这项工程。
She blushes for him.
听了他的话，她羞红了脸。
How long did it take you to accomplish this complicated job?
你花了多久才作完这复杂的活儿？