I go swimming every day in order to keep fit.
我每天游泳以保持健康。
Some teachers find it difficult to keep their classes in order.
有些教师觉得难以维持课堂秩序。
In order to get a complete picture, further information is needed.
为掌握全面情况，还需要详细资料。
State your reasons in order of importance.
按重要性顺序陈述你的`理由。
I must put my affairs in order.
我必须整理整理我的事务。