Dtt
abbr. diphtheria tetanus toxin 白喉，破伤风毒素; duplicate title transferred 副标题转移
🗣️ 情景例句
I was when I first came to the United States.
当我刚到美国来的时候是感到有点紧张。
He realized that he was heading in the wrong direction.
他意识到走错了方向。
No, thanks. Help yourselves to the cakes.
不必，谢谢。请随便吃些糕点吧。