Picknometer
比重瓶
🗣️ 情景例句
Are you ready for a lifetime commitment?
你准备以身相许了吗？
I want you to work for yourself, and for the well-being fo the society.
我认为你们应为自己工作，为这个社会的幸福而工作。
Well, which colour do you like?
嗯，你喜欢哪种颜色？