Sapygidae
寡毛土蜂科
🗣️ 情景例句
I'm afraid i have a complaint to make.
恐怕我要提点意见。
He is playing on the slide over there.
他正在那边溜滑梯。
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。