There are alternative sources of nutrition to animal meat.

有能替代动物肉类的其他营养来源。

《柯林斯英汉双解大词典》

The need for alternative sources of energy is a military necessity.

寻找替代能源是一种军事需要。

youdao

Many of these areas are arid and alternative sources of water are not available.

这些地区许多地方干旱缺水，没有可替代水源。

youdao

The company launched the program in 2006 to promote the development of alternative energy sources for aircraft.

VOA: standard.2010.08.11

We would be then reaching to the EU, and saying: "Look, you got some oil, and you've also got possibilities of developing alternative sources of energy, We'll work with you.

我们主动和欧盟交谈，你们有石油资源，你们还有可能,开发可替代能源资源，我们想和你们合作。

普林斯顿公开课 - 国际座谈会课程节选

It includes substantial spending increases for health care,education and the development of alternative energy sources.

VOA: standard.2009.03.17

That means investing in clean, alternative sources of energy, like advanced biofuels and natural gas.

WHITEHOUSE: Weekly Address: Clean Energy to Out-Innovate the Rest of the World | The White House

Finally, consultants are increasingly turning to alternative sources of revenue to increase their bottom-lines.

FORBES: A Proposal For Managing Pension Consultants (September 1, 2000)

Scientists agree that alternative sources of energy are inevitable, but coal is not going to disappear soon.

NPR: Scientists Hunt for Solution to CO2 Problem