mymarksfell.或者myscoredeclined.(分数下降了)例句1.yourmarksfellagainthisterm,youshouldworkharder.这学期你的成绩又下滑了,你该下力了!2.gradually,ibegantogetlazyandscorealsograduallydeclined.渐渐地,我开始偷懒,成绩也慢慢下滑了。来自互联网