Ctbt
abbr. ceftibuten 头孢布坦（抗生素）; Comprehensive Test Ban Treaty 全面禁止核试验条约
🗣️ 情景例句
That must be Nat.
一定是Nat。
Car manufacturers must be very uneasy now.
现在汽车制造厂商们无疑都非常不安。
Suddenly, there was a slight trembling sound from below, and the captain went down to see what had happened.
突然，从船舱下部传来一声微颤音，船长走下船舱去查看究竟。