on end地用法
问题描述：
on end地用法
答
(1) 竖起,笔直地立着
(2) 不停连续
竖起,笔直地立着
standing on one end,standing (unnaturally) upright
· Place the box on end.
把箱子竖着放.
不停连续
without stopping,continuously
· It has been raining for three days on end.
雨不停的下了三昼夜.