Backsiphonage
反虹吸
🗣️ 情景例句
but it is.
但实际上很要紧。
The boss is waiting in his office for us to come and explain why we failed to finish this work on time.
老板在他的办公室里等着我们前去说明未能按期完成这个工作的理由。
How do you do?
您好！