I don't have any coins,please change. 我没有零钱,请换一下。 Please put a coin into the slot. 请把钱币放进投币口。 There's no paper. Please give me some. 没有卫生纸了,请给我一些。 Buy toilet paper at the stand, please. 请到这个摊位买卫生纸。 The door of toilet doesn't lock. 洗手间的门不能锁了。 Use another one because the lock is out of order. 请用另一间,这间的锁坏了。