the act of changing the order, position, or time of arrangements already made

a rearrangement of/to our plans 对我们的计划的重新安排

As students of chemistry know, even small rearrangements of a molecule's structure can produce a compound that acts differently. 学化学的学生都知道，分子结构哪怕有很小的变动，都会产生新的引起不同化学反应的化合物。

Going on a long trip always means lots of rearrangements to my schedule. 出远门总是意味着要对我的日程安排重新计划一番。