Lockgates
(lockgate 的复数) n.(运河等的)闸门
🗣️ 情景例句
It smells so delicious.
它闻起来好香。
Do you often play tennis on Sunday?
你常常在星期日打网球吗？
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。