selling

My boss is very old-fashioned and I'm having a lot of trouble selling the idea of working at home occasionally.

我的上司很守旧，我要费好大的劲才能使他相信偶尔在家里工作是个不错的主意。

He is selling his old car to buy a new one.

他正在卖掉旧车来买一辆新车。