及物动词
1. He has worked hard to maintain his family.
他努力工作来养家。
2.
2. Ann and Mary maintained their friendship for the next thirty years.
安妮和玛丽在此后的三十年中一直保持着她们之间的友谊。
3. Mr.Smith maintains his son at college.
史密斯先生供养念大学的儿子。
4. The car has always been properly maintained.
这汽车一直保养得很好。
5. He maintains that he once saw a UFO.
他坚持称自己曾看见过飞碟。