你可能已经注意到，人们根据他们处境的不同，使用不同的方式表达相似的想法。

You probably have noticed that people express similar ideas in different ways, depending on the situations they are in.

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这让他们对自己的产品有了不同的想法，他们看到了人们对产品的反应；他们会走到商店里的顾客面前，问他们关于产品的问题。

Now that gave them a very different idea about their product, they saw how people responded to it; they could go up to customers in the store and ask them questions about it.

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科学家们也不能完全确定，他们有不同的想法。

Scientists aren't completely sure, and they have diverse ideas.

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