a notation cancelling a previous sharp or flat
同义词：natural
postpone indefinitely or annul something that was scheduled
同义词：call off??/??scratch??/??scrub
make up for
同义词：offset??/??set off
declare null and void; make ineffective
同义词：strike down
remove or make invisible
同义词：delete
make invalid for use
同义词：invalidate
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。