n.变化；突变；变异

Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。

A change, or mutation, happens when the order of the letters changes. 当这些字母的排列顺序有所变化时，就会发生基因突变。

The mutations in plants caused by radiation have been found in experiments. 放射线引起植物变异已在实验中被证实。

This mutation makes it better adapted than the other four pigs. 这种变异使它的适应能力比其他四只猪更强。