月变动 meaning in English

monthly variation

Classes will be rescheduled in january and july every year . please visit our website for the latest updates
班别编排会在每年1月及7月变动，请家长留意本团网页最新公布的上课时间表。
Bird species in mangrove areas changed monthly from 57 to 104 , in which march was the largest and june was the least . different studied areas had different bird ' s species monthly changing trend
闽南沿海地区红树林区鸟类每月物种数在57 ? 104种之间变动， 3月最多， 6月最少，不同样地具有不同的鸟类物种数月变动趋势。