ace
/eɪs; es/ n 1 playing-card with a large single spot, usu having the highest or lowest value in card games 侱点的纸牌（通常在纸牌游戏中点数最高或最低）: the ace of spades 黑桃侱. 2 (infml 口) person who is an expert at some activity 某些活动中的能手 : [attrib 作定语] an ace pilot, footballer, marksman, etc 王牌驾驶员, 足球健将, 神射手. 3 (in tennis) stroke, esp a service, that is too good for the opponent to return （网球赛中, 尤指发球）得分的一击. 4 (idm 习语) (have) an ace up one's sleeve; US (have) an ace in the hole (infml 口) (have) sth effective kept secretly in reserve 暗中保留的王牌. play one's ace use one's best resource 使出绝招. within an ace of sth/doing sth very near to (doing) sth 差一点儿, 几乎（做）某事: He was within an ace of death/being killed. 他险些丧了命.
