1. The landlord gave a written undertaking that the repairs would be carried out. 房东书面保证将进行维修。
2. More recently, however, some companies have been investing money in a more ambitious undertaking: learning how to adjust the fundamental make-up of the food they sell. 然而，最近一些公司开始投资一项更加雄心勃勃的事业：学习如何调整他们销售食品中的基本成分。
3. Organizing the show has been a massive undertaking. 组织这场演出是一项巨大的任务。
4. Making the house habitable was a major undertaking. 把这房子收拾得可以住人是个大工程。
5. He is interested in buying the club as a commercial undertaking. 他有意购买那个俱乐部作为投资。
