例句：
They sell hard-core pornography.
他们出售赤裸裸的'色情物品。
The pens sell for just 50p each.
这些钢笔每支只卖50便士。
I'm very tempted to sell my house.
我很想卖掉我的房子。
Some lines sell better than others.
有些品种的货物销售得好些，有些则较差。
Why are you in such a hurry to sell?
你为什么如此迫不及待地要卖出？