Picnometer
n. 比重瓶
🗣️ 情景例句
Your birthday is tomorrow, isn't it?
你明天生日 ，是吗？
He took two weeks off in August.
他在八月份休假两星期。
It's very hot. It's summer in Australia now!
很热。澳大利亚现在正值夏天！