Walch
[人名] 沃尔克
🗣️ 情景例句
Are you through with your work?
你工作做完了吗？
I'd like to allow anyone to ask whatever questions they may have.
我乐意接受任何人提出的任何问题。
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。