VERB
苦恼;烦恼;发愁
If you fret about something, you worry about it.
例句
I was working all hours and constantly fretting about everyone else's problems...
我一刻不闲地工作，总是为别人的事操心。
But congressional staffers fret that the project will eventually cost billions more...
但是国会工作人员担心这项计划最终会多耗资数十亿元。