frets
The frets on a musical instrument such as a guitar are the raised lines across its neck.
frets , fretting , fretted
If you fret about something, you worry about it.
I was working all hours and constantly fretting about everyone else's problems.
我一刻不停地工作着,还一直担心着其他人的问题。
But congressional staffers fret that the project will eventually cost billions more.
但国会的工作人员担心这个方案最终会多花几十亿。