He also liked to take his sailboat out on the water on windless days, "just for the challenge".

他还喜欢在无风的日子里驾着帆船出海，“只为了迎接挑战”。

youdao

The biggest challenge here is irrigation, which consumes 70% of the world's fresh water.

这里最大的难题就是灌溉，因为这消耗了世界上70%的淡水。

youdao

The Ice Bucket Challenge requires that participants pour a bucket of ice water on themselves.

冰桶挑战要求参与者将一桶冰水倒在自己身上。

youdao

Another problem is access. Connecting informal communities to the city's water pipeline is a challenge because many are living on the land illegally.

VOA: standard.2010.08.04

"Tea is the world's second most popular drink, second to water, and there are literally thousands of tea formulations around the world, so the challenge for us, isn't finding new tea recipes, it's focusing and making sure we're developing things that are going to work."

VOA: standard.2010.02.17

When we started in 2005, I used to have to put in several slides in my presentation about the challenge of water scarcity.

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Mr. Reilly is Chairman of the Board of ClimateWorks Foundation, and Global Water Challenge.

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In Fuerteventura, the challenge is both water and energy sufficiency.

UNESCO: MEDIA SERVICES