🗣️ 情景例句
What kind of performance are you looking for?
你要什么配置的机器。
You use the front door and I'll hit the back.
你从正门进去，我袭击后面。
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。