At a time when natural history was a valuable tool for discovery, Merian discovered facts about plants and insects that were not previously known.

在那时，自然史是很有价值的探索工具，梅里安发现了有关植物和昆虫的真相，这些真相从未为人所知。

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It's a valuable tool that you want to have as a programmer.

对于作为一名程序员的你来讲，这是很有价值的一个工具。

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However, some scientists believe that carbon credits can still be a valuable tool.

尽管如此，一些科学家认为碳信贷可能仍然是有价值的方法。

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It's a valuable tool that you want to have as a programmer.

对于作为一名程序员的你来讲,这是很有价值的一个工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

I guess it's not macho enough, John, to just, you know, you know, go off and do things by hand, you ought to just run them, but it's a valuable tool to get into, so let me do that here.

我认为这不太男人了，John，你知道的，他们仅仅是认为比起用手做来,更应该直接去运行程序，但是这确实是调试代码的非常有价值的工具，让我在这里给大家演示下吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

OK, so how can I code this up? Well, you might think, let's just jump in and write some code, I don't want to quite do that though, because I want to show you another tool that's valuable for thinking about how to structure the code, and that is a something called a flow chart. Now.

好，那么我怎么把这个以代码实现呢，你可能会想，让我们进去直接写代码把,但是我不想这么做，因为我想教给大家另外一项很有价值的,用来组织代码的工具，叫做流程图,现在，像Guttag教授,和我这么大岁数的人。

麻省理工公开课 - 计算机科学及编程导论课程节选

Special Offer: Dividends are money in your pocket and a valuable tool for identifying undervalued and overvalued stocks.

FORBES

As Fox News noted a few months back, social media have become a valuable tool in crime-fighting.

FORBES: What you say and do on social networks can be used against you in a court of law

The recent slide in gold prices reinforces my view that divergence analysis can be a valuable tool if applied correctly.

FORBES: Gold's Top: A Win for Divergence Analysis