尽管默认情况下枚举被存储为整数，但您可以指定要使用的整型基类型。

While enumerations are stored as integers by default, you can specify the integral base type to use.

youdao

在这种情况下，虽然年龄实际上是一个有效的整数，但转换仍然会失败，因为该值不是短整型的。

In this case, while age is actually a valid integer, conversion still fails because the value is not a short integer.

youdao

浮点数和小数不象整数一样“循规蹈矩”，不能假定浮点计算一定产生整型或精确的结果，虽然它们的确“应该”那样做。

Floating point and decimal Numbers are not nearly as well-behaved as integers, and you cannot assume that floating point calculations that "should" have integer or exact results actually do.

youdao