Point mutation
[化] 点突变
🧩 词语组成解析
🗣️ 情景例句
You say that many big companies act unscrupulously, but can you give me one example?
你说许多大公司不择手段，你能举个例子吗？
The perfume was very delicate.
那种香气非常优雅。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。