This ensures that reflections from different places are easier to tell apart, because they do not blur into one another.

这样保证从不同地方反射回来的光更容易区分开，因为他们不会变模糊一片。

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But even to the trained eye, two species of earthworms can be tough to tell apart.

可是，即使是受过训练的眼睛，也可能很难把两种蚯蚓分辨开。

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But this special report USES "data" and "information" interchangeably because, as it will argue, the two are increasingly difficult to tell apart.

而本组特别报道混用“数据”和“信息”，后面会谈到这是因为这两个词越来越难拆开说了。

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