Backventing
背部通气
🗣️ 情景例句
This is he speaking.
我就是。
I could swear I've been here before.
我敢发誓我曾经来过这儿。
It was no use pretending that I had not seen him, so I waved to him.
若再装作没看见他已是没有用了，我只好向他招手。