That trip was a difficult but valuable lesson.

那趟旅行是艰难却又宝贵的一课。

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In short, my life in university is busy but valuable.

总之，我的大学生活是忙碌而有价值的。

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In the early days of underground coal mining, pit canaries often had short but valuable lives.

早期地下采煤的时候，矿井中的金丝雀常常拥有短暂而有价值的一生。

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But it was the Spanish explorer Hernando Cortes who understood that chocolate could be a valuable investment.

VOA: special.2010.02.17

It'll allow you to tackle interesting problems I'll have you to write from scratch, but it does mean that this skill here is going to be really valuable.

它会让你处理有趣的问题,我会让你绞尽脑汁的编写，但是这一点意味着,这个技能非常宝贵。

麻省理工公开课 - 计算机科学及编程导论课程节选

But it's a valuable thing. It says, in each case, I return some useful value from this procedure.

但是这就是变量，是在每个例子中，我从这个程序中返回了一些有用的值。

麻省理工公开课 - 计算机科学及编程导论课程节选

It also takes time to build online networks through the organic but valuable spread of friend-of-a-friend connections.

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He managed modest but valuable achievements, such as helping to open a job bank and remove asbestos from public housing.

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Police began to interview neighbors and conducted searches 10 days after his disappearance, but valuable time had been lost, Kelly Jolkowski said.

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