Diffusion (vacuum)pump oil
[化] 扩散泵油; 扩散真空泵油
🧩 词语组成解析
oil
[ɔɪl]
n. 油;石油;油画;燃油;
vt. 给…加油;
vi. 化成油;
🗣️ 情景例句
I'll hold on to them for you.
我为你保管吧。
It doesn't happen every day.
这可不是天天都有的。
Which language is spoken by the largest number of people in the world?
世界上哪种语言说的人最多？