Corwin
科温（人名）
🗣️ 情景例句
As far as English is concerned, he is second to none.
就英语来说，没有人能够比得上他。
You sucker!
江湖郎中！
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。