period基本解释
n,周期，期间；时期；月经；课时,同近
Tomorrow’s weather will be dry with sunny periods..明天天气干燥，间或晴朗。
周期，期间；时期；月经；课时；（语法学）句点，句号英释nna particular length of time with a beginning and an end
period of time,一段时间；时段.短语
