be sold on something

• 赞成某事；热衷于(某事)；对某事热心

be sold on something的用法和样例：

例句

1. They need not be committed to any particular form of property ownership.
   他们未必赞成某一种特定形式的财产所有制。
2. Young people are very hot on pop music.
   年青人热衷于流行音乐。
3. Lily used to be keen on stamps collecting.
   莉莉曾经热衷于集邮。