Arsenometry
[化] 亚砷酸滴定法
🗣️ 情景例句
Freeze!
别动！
How can he give us such a tedious lecture!
他怎么能做这么沉闷乏味的演讲。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。