Urinometry
尿比重测量法
🗣️ 情景例句
Hey, why don't we go out
嘿，我们何不出去
I'm going skating in the Alps next month.
下个月我去阿尔卑斯山滑雪。
He was still smiling when the door opened and his wife came in.
他正笑着的时候门开了，他的妻子走了进来。