北极旅鼠有时会成群结队地迁徙，这是一种令人着迷的自然现象。

Sometimes ___lemmings migrate in large groups, which is a fascinating natural phenomenon.

那些盲目追随潮流的人就像旅鼠一样，最终可能伤害自己。

People who blindly follow trends act like ___lemmings, potentially harming themselves in the end.