能组成单词hat，意思是帽子、角色例如：
1.Sure, most of us wear many hats in our jobs, but daylighters actually perform tasks for two different businesses while physically present at just one of them.我们大多数人在工作中都要扮演很多角色，但上班兼职族却能在身处一个办公场所时完成两项完全不同的工作任务。
2.You need to wear many different hats, even when you're not the expert.你需要承担不同的角色，即便你不是相关领域的专家。
