n.

1. 提议，建议[C]
2. 【口】（向女性）求欢，挑逗[C]
3. 【逻】【数】命题[C]
4. 【语】主题[C]
5. 陈述；主张；论点[C][+（that）]
   The students discussed the proposition that man is basically good.

   学生们讨论了这么一个论点，即人性本善。

6. 【口】（要对付的）事情；问题；家伙[S1]
7. 【口】企业；事业；生意[C]

vt.

1. 【口】向（女性）求欢
2. 【口】提出猥亵的要求
   Dad said he was propositioned by a call girl at the ritzy hotel.

   父亲说他在豪华饭店时曾有应召女郎找上他。

   He propositioned every girl in the bar, but none were interested.

   他对酒吧里的每一女孩提出猥亵的要求，但是没有人理睬他。

n.

1. a statement expressing a judgement or opinion.
   ▸Logic  a statement expressing a concept that can be true or false.
   ▸Mathematics  a formal statement of a theorem or problem.
2. a proposed scheme or plan.
   ▸US a constitutional proposal.
3. informal an offer of sexual intercourse.
4. a matter or person to be dealt with, with reference to the likelihood of a successful outcome.

v.