Spacetime
时空
🗣️ 情景例句
He bases his arguments on facts.
他的理论以事实为根据。
He who wills success is half way to it.
下定决心成功的人是成功了一半。
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。