Definition: separately, one after the other Level: B2
城市里的旧建筑一座接一座地被拆除，并替换成现代玻璃塔楼。
___One ___by ___one the old buildings in the city have been demolished and replaced with modern glass towers.
他们一个接一个地进入房间。
They entered the room ___one ___by ___one.
他一个接一个地会见哈利的朋友们，以查明他是如何死的。
He met Harry's friends ___one ___by ___one to find out how he died.
