Otds
abbr. optical time division switching 光时分交换
🗣️ 情景例句
I'm going to play with a group of friends.
我打算和朋友一起玩。
It doesn't work.
它出故障了。
It's a waste of time reading that book. It's rubbish.
看那本书真是浪费时间。那简直是垃圾。