Liquidensitometer
液体密度计
🗣️ 情景例句
I didn't mean it, I'll make it up to you.
我不是有意的，我会为你作出的一切补偿的。
Don't underestimate the difficulties of the work.
不要低估了这项工作的限巨性。
Have they ever been there before?
他们以前去过那儿吗？