S.t.u.
[医] 皮肤试验单位
🗣️ 情景例句
He seems to be getting on very well at school.
他在学校似乎过得很好。
The doctor did not reveal to him his hopeless condition.
医生没有向他透露说他的病已经没治了。
It's been open for several years.
它建成已有好几年了。