vt.

1. 试图；着手做；进行，从事
   We undertook a trip to the west.

   我们到西部作了一次旅行。

2. 承担，接受
   The work was undertaken by members of the committee.

   此项工作由委员会成员承担。

3. 同意；答应；保证[Y][+to-v][+（that）]
   I can not undertake that you will make a profit.

   我不能担保你会获利。

v.

1. commit oneself to and begin (an enterprise or responsibility); take on.
2. formally guarantee, pledge, or promise.