C4
abbr. 补体4（complement 4）
🗣️ 情景例句
Amtrak is happy to announce our arrival in New York City.
我们很高兴报告诸位 Amtrak火车就要到达纽约了。
Cohabitation dorm
同居寮
People woken during these periods of eye-movements generally reported that they had been dreaming.
在眼球活动期间被叫醒的人都说自己在做梦；