W: From 3 to 6 months if everything goes well.
W:如果一切顺利的话,需要3到6个月。
W: About one hour, the next express train arrives in New York at 3:15.
W:差不多一个小时,下一班快车在3:15到达纽约。
([r -] [w -] [x -]) {3} — permissions (use. To match the first character, because it can be any of several different special characters.)
([r -] [w -] [x -]){3}—权限(使用.匹配第一个字符,因为它可能是几个不同的特殊字符中的任何一个。)
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