1.渴望的；热切的；热衷的 If you are keen on doing something, you very much want to do it. If you are keen that something should happen, you very much want it to happen.
keenness ...Doyle's keenness to please. 多伊尔想取悦他人的热切心情 ...a keenness for the idea of a co-ordinated approach to development. 想要协调一致搞发展的强烈愿望
