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 maintain that the most important thing is having good friends.
我认为最重要的是有好朋友。
I will inform you again.
我会再通知你。
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？