Plant communities assemble themselves flexibly, and their particular structure depends on the specific history of the area. 植物群落可以自由地聚集,并且,它们的特殊结构由该区域的具体历史情况所决定。
By law, companies must "consider seriously" requests to work flexibly made by a parent with a child under the age of six, or a disabled child under 18. 根据法律,公司必须“认真考虑”有6岁以下子女或18岁以下残疾儿童的父母提出的弹性工作要求。