subgroups

基本解釋

These subgroups can be recalled for the same match or search, or extracted for post-processing.
這些子組在相同的匹配或搜索中被重複調(diào)用，或稍後処理中提取。
Why are matches of subgroups important?The main reason is that there are times where you want to extract the patterns you match, in addition to making a match.
使用圓括號(hào)的一個(gè)額外好処就是匹配的子串會(huì)被保存到一個(gè)子組，便於今後使用。
But the camera now has new subgroups of parts which act like parts themselves.
但此時(shí)照相機(jī)擁有了一個(gè)部件的新子集，其功傚與部件相同。