The area for highest congregation occurred in 50 m2 when the populations were young or middle age stages and 300 m2 when they were in old age stages.是什么意思_The area for highest congregation occurred in 50 m2 when the populations were young or middle age stages and 300 m2 when they were in old age stages.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句