Aerochemical
空投化学剂的
🗣️ 情景例句
He's a real two-timer.
他用情不专。
The cobbler's wife is the worst shod.
鞋匠的老婆没有好鞋穿。
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。