Picknometer
比重瓶
🗣️ 情景例句
I'm very sorry.
非常抱歉。
Thank you for a very enjoyable evening.
谢谢你，今晚过得真愉快。
Both of them are exciting. I like watching them. Are you good at sailing?
这两种运动都令人兴奋。我喜欢看。你擅长帆船吗？