Picnometer
n. 比重瓶
🗣️ 情景例句
I've been looking forward to meeting you.
我一直盼望能有幸认识你。
To facilitate carrying, rope or metal handles are indispensable and should be fixed to the boxes.
为便于搬运，绳子或铁把手不可缺少，并将其固定在箱子上。
First of all, don't come in here without a teacher.
首先，没有老师领着不要进这儿。