Unsubstituted
未被取代的
🗣️ 情景例句
How do you want your hot dogs?
你的热狗想要什么调料？
I have no idea what they're going to say, so I'll have to play it by ear.
我一点不知道他们将会说些什么，所以我只好见机行事。
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。