Backsiphonage
反虹吸
🗣️ 情景例句
It's not the same.
那可不一样。
The sky is not less blue because the blind man does not see it.
天不会因瞎子看不见而减其蓝色。
What?Speak up. Penny.I'm afraid I can't hear you.
什么？彭妮，大声一点。我可听不见你念的。