For example, the pattern o {2} would match two (and only two) o characters.
例如，模式o{2}将匹配两个(仅仅两个)o字符。
this little 'o' indicated that the train only stopped for mail.
这个标记表示列车是为装邮件而停车。
She says, "I can take the three o 'clock, but only for a half-hour."
她说，“我可以做3点钟的，但只能做半个小时。”
It was still only about four o 'clock but Wilbur was ready for bed.
的确是一个累人的下午，现在才四点钟，而威尔伯已经要睡了。
It was still only about four o 'clock but Wilbur was ready for bed.
的确是一个累人的下午，现在才四点钟，而威尔伯已经要睡了。
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