上向凿井;
英文例句/中文翻译:
The books were piled up all over the floor any old how.
地板上书堆得乱七八糟的,到处都是。
She's built up a good stock of teaching materials over the years.
这些年来她积累了大量教学资料。
Stand it up over here.
把它竖在这里.