1·Return a two digit presentation string of a number, e. g. for a number 9, it returns "09".
传回一个两位数字表示方法的字串， 例如参数为9 的话，则传回「09」
2·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。
3·By the way, don't tell the Y2K folks we're ignoring the first two digits of a four-digit year.
顺便说一下，应该告诉那些研究y 2k的人您省略了年份的前两位数。
4·A two-digit year that is greater than the last two digits of the cutoff year is in the century that precedes the cutoff year.
而一个比截止年份的后两位数字大的两位数年份所处的世纪比与该截止年份所处的世纪要早。
5·Tingshuo recognises what each digit in a two digit number represents and is able to identify how many tens and units there are.
朔宝能够识别一个个位数在两位数中的表述，并且能够说出里面有几个十位数和几个个位数。
6·A two-digit year that is less than or equal to the last two digits of the cutoff year is in the same century as the cutoff year.
一个比截止年份的后两位数字小或者与其相等的两位数年份与该截止年份处于同一个世纪。
7·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。
8·The basic rule for this checksum is that each of the first nine digits is multiplied by its position (that is, the first digit times one, the second digit times two, and so on).
这个校验和的基本规则是前九位数的每一位乘上它的位置(即第一位数乘上1，第二位数乘上2，依次类推)。
9·The second set, [A-Za-z0-9_]{2,9}, represents a series of at least two and up to nine of any letter, any digit, and the underscore.
第二个集合 [A-Za-z0-9_]{2,9} 表示由至少 2 个至多 9 个任意字母、数字和划线组成的序列。
10·Two applications (App1 and App2) are accessing data in a Backing Map called "account bal," which contains account balances and USES the account number (a four-digit numeric string) as its key.
两个应用程序(App1和App2)正在访问名为“Account Bal”的Backing map中的数据，Account Bal中包括帐户余额并使用帐户编号(一个四位数的数字字符串)作为其键。