Alkalometry
生物碱测定法
🗣️ 情景例句
How many people will you be bringing?
你约了多少人来？
Who undertakes many things at once, seldom does anything well.
许多事情同时干，一件事也办不成。
The police had been told that a bomb had been planted on the plane.
有人报告警察，说飞机上安放了一枚炸弹。