理论，其适用的范围与“假设”不同。

A theory differs from a hypothesis in its scope.

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该原则有其适用的具体条件及例外。

The principle has its suitable specific conditions and exceptions.

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它试图解释某一个事件，它同理论类似，是可测试的、可证伪的，只是其适用的范围比较狭窄。

It attempts to explain an event, and is testable and falsifiable like a theory is, but on a more narrow scale.

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that was, that still are, that still apply,

那些曾经是，现在依然是，并会将其一直适用下去的，

想要消除不平等 - SpeakingMax英语口语达人