Picknometer
比重瓶
🗣️ 情景例句
We love you, Daddy.
我们爱你， 爸爸。
Poverty breeds strife.
贫穷引起斗争。
While John Gilbert was in hospital, he asked his doctor to tell him whether his operation had been successful,
当约翰。吉尔伯特住院的时候，他问医生他的手术是否成功，