求翻译：每年一届，分为春夏（9、10月上旬）和秋冬（2、3月）两个部分，每次在大约一个月内相继会举办300余场时装发布会。具体时间不一定，但都在这个时段内发布。是什么意思？

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A session, divides into every year the spring summer (9, early October) and the fall winter (2, in March) two parts, each time one after another can hold 300 fashionable clothing release conferences in an about month.The concrete time is uncertain, but all issued in this time interval.

The annual session, divided into spring and summer (9, early October) and autumn (2 March) in two parts, each successively organized in about a month more than 300 more than shows. Not necessarily at a specific time, but were released within this time period.

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