Backsiphonage
反虹吸
🗣️ 情景例句
This.
这个。
A leader should not dictate to his followers.
领导者并不是向部下下达命令便了事的。
Before long, the noise dropped completely and the boat began to drift gently across the water.
没过多久，噪音便彻底消失，快艇开始在水面上慢悠悠地漂流。