You can use [: digit:] in place of [0-9], and [: alpha:] is a more portable replacement for [-a-za-z0-9_]. For example, you can strip all punctuation from a string by using the statement.

您可以使用[：digit：]代替[0 - 9]，并且[：alpha：]是比[- a - zA - z 0 - 9 _]更具有可移植性的替代者。

youdao

Which card has the digit 8 in the place value of ten thousands?

哪张数目卡的数字8的位值是万位？

youdao

When rounding is required, consider only one digit in the decimal place to the right of the last place in the limit expression.

当修约是必需的，只考虑表达限值中最后一位右边的一位小数。

youdao

Glancing at the bottom, this is pretty arbitrary, but I chose to format my string as follows: % 1f so at the bottom here I'm printing out %.1f, which quick sanity check means print just one digit after the decimal place.

看下这个底部，这个是相当随意的，但我选择把我的字符串格式化成这样：,所以在这个底部我打印输出，提醒一下，这是一个只打印出,小数点后一位的方法。

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It slipped into second place on our list of the fastest-growing tech companies but still shows triple-digit annualized revenue growth over the past five years.

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