词汇	existence of extremum
释义	existence of extremum 极值的存在
随便看	essential qualities for a good manager essential qualities for good administrators essential qualities for good managers essential quality essential-quality essential quality of damages essential quality-oriented education essential rationality essential raw cooling water essential readability Essential Reality essential realization essential reason essential reasoning essential reasons essential record Essential Record of Tea Tasting essential regulation essential relation essential relations essential renal bleeding essential renal hematuria essential repair parts stockage list essential repair stock list essential reproductive health services