Match at most one occurrence of the preceding expression.
在大多数比赛之一发生前的表达。
A regular expression followed by? Matches zero or one occurrence of the regular expression.
号后面的正则表达式可以匹配这个正则表达式的零次或一次出现。
The occurrence of one thing there are always reasons, travel is about?
一件事的发生总有原因，旅行是为了什么？
The occurrence of any one thing can not be separated from its background.
发生任何一件事都离不开它的背景。
Returnss the position of the first occurrence of one string within another.
可以得到一个字符串在另外一个字符串中首次出现的位置。
It is such a common occurrence that no one ever wonders from whence it came.
这件事太不足为奇了，所以没有人会去猜想它是怎么发生的。
Project. At one point in my career this was a frighteningly common occurrence.
项目。在我职业生涯的一个点，这是一个可怕的家常便饭。
Project. At one point in my career this was a frighteningly common occurrence.
项目。在我职业生涯的一个点，这是一个可怕的家常便饭。
应用推荐