vt.

1. 征（税）；加（负担等）于[（+on/upon）]
   The government imposed a heavy tax on luxury goods.

   政府对奢侈品课以重税。

2. 把……强加于[（+on/upon）]
   The present trouble was imposed on him.

   目前的困难是强加在他身上的。

vi.

1. 利用，占便宜；打扰[（+on/upon）]
   I don't want to impose on you by staying too long.

   我不想打扰你，不多耽搁了。

2. 欺骗[（+on/upon）]
   She knew she was imposed on.

   她知道自己上了当。

v.

1. force to be accepted, done, or complied with.
2. (usu. impose on) take advantage of someone.
3. Printing  arrange (pages of type) so as to be in the correct order after printing and folding.