undertaking的解释，在云词典中undertaking是什么意思？

undertaking

[ˏʌndә'teikiŋ]
n.
事业, 企业, 承诺, 保证, 殡仪业

An undertaking, especially one of some scope, complication, and risk.
事业一项事业，尤其指一项雄心勃勃、复杂、且具危险性的事业
And for that turn there are never wanting, some persons of violent and undertaking natures, who, so they may have power and business, will take it at any cost.
而要找这种替身，世间还真不乏一些雄心勃勃的冒昧之徒，只要能获得权位，这种人不惜付出任何代价。
He blazed away at his undertaking.
他全力以赴地工作。
He is too timid to venture upon a new undertaking.
他太胆小，不敢从事新的事业。
I am still uncommitted to undertaking the work.
我还没有说定要接受这份工作。
In system development, an undertaking with prescribed objectives, magnitude, and duration.
在系统开发过程中，一种具有规定目标、规模和期限的任务。
Negotiating a reduction in nuclear arms is a long and arduous undertaking.
有关削减核武器的谈判是一项漫长而艰苦的工作