释义
n. 事业,企业,保证
例句
1. He is too timid to venture upon a new undertaking. 他太胆小，不敢从事新的事业。 2. 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