Otds
abbr. optical time division switching 光时分交换
🗣️ 情景例句
She sure keeps busy.
她真的是忙个不停。
He has bought 10 tractors for the village.
他为村里买了10台拖拉机。
Imagine a railway station, a bus company or a cinema, which many people need to ring to find out the times of trains, buses or films.
想一想，有许多人需要打电话到火车站、汽车公司或电影院，以便弄清火车、汽车的起始时间或电影放映的时间吧。