unsell

1.unsell sb. on the idea of doing sth.

劝说某人放弃做某事

2.Or they can buy unsell (and sell) existing bonds.

他们也可以买卖现有的债。

3.unsell..coz the temperture is low so somepart of icecream become liquid.

原来是店员说冰淇淋有点融了，卖。