Communities on the island depended on whaling for their livelihood.

岛上的居民靠捕鲸为生。

《牛津词典》

They depended on animal husbandry for their livelihood.

他们以畜牧业为生。

《新英汉大辞典》

The central role of people and the preservation of their livelihood.

人的中心作用和维护他们的生计。

youdao

Since the shrimping grounds were shut they have lost their livelihood.

VOA: standard.2010.05.15

Learn the accomplishments of active life, take for your models not those people who spend their time on these petty quibbles but those who have a good livelihood and reputation and many other blessings."

学个谋生的一技之长，别学那些满嘴谬论的人,要学那些生活富足，声名显赫及福泽深厚的人“

耶鲁公开课 - 公正课程节选

"In a broader sense we need to empower our tribal communities with the means to determine their own destiny, their livelihood, their own security and above all their dignity and self respect."

VOA: standard.2009.11.04

Some 7m animals died, wiping out many families' entire herds and so their livelihood.

ECONOMIST: Nomadism in Mongolia

Lots of businesses are involved with that complex and depend on it for their livelihood.

WSJ: The Game: A GM Unit in China's Hands

About 80% of Syrians living outside the major cities rely on farming for their livelihood.

CNN: Q&A: What options are left in Syria?