虽然存在一些二义情况，但大多数情况下还是不需要使用下划线的。

While there are a few ambiguous cases, the vast majority of the time an underscore will not be necessary.

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存在多个与实参匹配的函数，但没有一个是明显的最佳选择。这种情况也是，该调用具有二义性。

There is more than one function that matches and none of the matches is clearly best. This case is also an error; the call is ambiguous .

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从义位之间的关系看，有本义与引申义，我们从使用情况、词性变化、引申途径、引申类型等方面对二者间的关系进行了考察和分析；

Secondly, we analyze the relationship between original and transferred meaning from the angles of usages, changes in part of speech, transferred approaches and types.

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