As yet a challenge to explain the cause-and-effect relationship between sleep and nutrition, there may be a third factor that impacts both of them.

要解释睡眠和营养之间的因果关系，还有一个挑战，那就是可能有第三个因素对它们两者都有影响。

youdao

It's as yet a challenge to explain the cause-and-effect relationship between sleep and nutrition. There may be a third factor that impacts both of them.

迄今为止，解释睡眠和营养间的因果关系仍是一个挑战。可能存在第三个因素影响这两者。

youdao

The other factor that posses a challenge is that I am dyslectic.

构成挑战的另一个因素是我是阅读困难者。

youdao

And also for the challenge factor because they challenge the way I was thinking and writing

还有挑战因素，因为他们挑战了我思考和写作的方式，

怎么协调意见冲突 - SpeakingMax英语口语达人

In Washington, well-known civil rights attorney, Ralph Neas, noted that US federal law prohibits targeting challenges to voters, even if there is a basis for the challenge, if race is a factor in targeting the voters.

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And there is one other factor that makes an Obama challenge from Hillary much more than idle speculation: former President Bill Clinton.

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That's when the world's second-largest personal computer manufacturer, Dell, out to challenge Apple's "cool" factor, announced it was dropping its 800 ad agencies for one contract with WPP.

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