Q.p.
[医] 定量披尔奎氏反应(结核菌素定量皮上划痕法)
🗣️ 情景例句
They hardly ever see each other.
他们几乎彼此不碰头。
He's studying his lesson.
他正在学习课程。
The problem is finding land for it.
问题是要找到土地来修建厂房。