keen
/ki:n; kin/ adj (-er, -est)
1 ~ (to do sth/that...) eager; enthusiastic 热切的; 热情的; 热心的
a keen swimmer 喜好游泳的人
I'm not keen to go again. 我不太想再去了.
She's keen that we should go. 她热情地叫我们去.
2 (of feelings, etc) intense; strong; deep （指感情等）热烈的, 强烈的, 深刻的
a keen desire, interest, sense of loss 强烈的愿望、 兴趣、 失落感.
3 (of the senses) highly developed （指感觉）灵敏的, 敏锐的
Dogs have a keen sense of smell. 狗的嗅觉很灵敏.
4 (of the mind) quick to understand （指头脑）敏捷的, 精明的
a keen wit, intelligence 敏捷的头脑、 很强的理解力.
5 [esp attrib 尤作定语]
(of the points and cutting edges of knives, etc) sharp （指刀等的尖和刃）锋利的, 快的
a keen blade, edge 锋利的刀片、 刀刃.
6 (of a wind) bitterly cold （指风）刺骨的, 凛冽的.
7 (Brit) (of prices) low; very competitive （指价格）低廉的, 竞争力强的.
8 (idm 习语) (as) ,keen as `mustard (infml 口) extremely eager or enthusiastic 极热心的; 极热情的. keen on sth/sb (infml 口)
(a) interested in sth 热衷於某事物
keen on (playing) tennis 很喜欢（打）网球.
(b) fond of sb/sth 喜爱某人[某事物]
He seemed mad keen on (ie very interested in) my sister. 他发疯似的爱著我妹妹.
I'm not too keen on jazz. 我不太喜欢爵士乐.
(c) enthusiastic about sth 对某事物满腔热情的
She's not very keen on the idea. 她对那主张不很感兴趣.
Mrs Hill is keen on Tom's marrying Susan. 希尔太太很希望汤姆能和苏珊结婚.
keen / ki:n; kin/ v [I]
(usu in the continuous tenses 通常用於进行时态) lament a dead person by wailing 为死者恸哭、 哀号
keening over her murdered son 恸哭她那被谋害的儿子. keen, n Irish funeral song accompanied by wailing 爱尔兰哀歌（边哭边唱）.