a noticeable deterioration in performance or quality
同义词:slump??/??slack??/??drop-off??/??falloff??/??falling off
come off
同义词:fall off
fall heavily or suddenly; decline markedly
同义词:slump??/??fall off??/??sink
diminish in size or intensity
同义词:fall off??/??fall away
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。