two digit

基本解释

If set, three digit exponents are allowed. If not set, only two digit exponents are allowed.
如果设置，那么三位指数是允许的。如果没有设置，那么仅允许两位指数。
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However, if I ask, what is some even two digit number times some other even two digit number?
可是, 如果我问, 一个两位数的偶数乘以另一个两位数的偶数是多少?
Our example will successful parse the first 3 dates but not the final one because the final date string uses a two digit year that we have not provided a pattern for.
我们的例子成功解析了前3个时间，但对于最后一个使用2位数字来表示年的时间字符串，由于我们没有提供对应的模式，所以它没有被成功解析。

And a bit, B-I-T, just a shorthand for binary digit, 2 so a digit of zero over a one, bi means two, you only have two digits.
比特，B-I-T，是binary，digit的简写，从0到1的数字，而bi表示，所以你就只有两个数字。
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The lower that two digit number is - like say 05 - the sooner your check gets cut.
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