Fots
abbr. 光纤传输系统（fiber optics transmission sys-tem）
🗣️ 情景例句
Thank you.
谢谢。
I can't believe it.
我简直不敢相信。
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；