adj.不合適的；錯(cuò)誤的；不道德的

It's improper for parents to put too heavy duties on their children. 父母讓孩子承擔(dān)的責(zé)任太多是不合適的。

Fixed CTDs caused by improper buildings in several cities.All cities have now been checked and are CTD-free. 修正了若干城市中不合適的建筑，這些城市現(xiàn)在不會(huì)出現(xiàn)跳出現(xiàn)象。

Sometimes, improper use of words can cause big trouble. 有時(shí)，錯(cuò)誤的言辭會(huì)引起很大的麻煩。