n the activity of persuading someone to buy
v exchange or deliver for money or its equivalent
v be sold at a certain price or in a certain way
v persuade somebody to accept something
v do business; offer for sale as for one's livelihood
v give up for a price or reward
v be approved of or gain acceptance
v be responsible for the sale of
v deliver to an enemy by treachery
v. 卖；背叛, 经营（sell第三人称形式）