hæt noun
2
keep sth under your hat
to keep something secret [非正式] 对某事保密 informal
3
be wearing your teacher’s/salesman’s etc hat have your teacher’s/salesman’s etc hat on
also 又作 to be performing the duties of a teacher etc, which are not your only duties 【非正式】 干着老师/销售员等的工作〔指做不止一份工作〕 informal
我现在当经理了,只有当我们的销售代表碰到真正的难题时我才担起销售员的职责。