Urinometry
尿比重测量法
🗣️ 情景例句
When you see something, think of the English word for it.
当你看到一个东西时，就想到它的英文单词。
His presence in the room was not noticed.
没有人注意到他在房间里。
Of course. I love sports.
当然。我喜爱体育活动。