I think you were very shabbily treated.

要我说，你真是受大委屈了。

You shouldn't have treated him shabbily.

你不该亏待他。

He dared not treat him shabbily...

倒也不敢怠慢了。

But don't you think you've treated me a little shabbily?

但是，难道你不觉得你们待我太吝啬了吗？

It was a mean, shabbily furnished room, with a bed in it.

这是一间简陋的、家具破破烂烂的房间，里面有一张床。