v.（使）磨损，（使）疲惫
n.磨破，破烂，疲惫状态
The meat has been burnt to a frazzle.
肉已煮烂了.
She worked herself to a frazzle.
她工作得疲惫不堪.
He was worn to a frazzle when he got home from work.
他下班回家疲惫不堪.
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