Tetragraph
在密码中一连串的四个字母
🗣️ 情景例句
Bye.
再见。
I tried calling you several times yesterday but I couldn't get through.
我昨天给你打了几次电话，但都没有打通。
We have new methods like compensation trade and joint ventrue.
我们有补偿贸易和合资经营。