This hard work has drained away my keenness.这种艰苦的工作削弱了我的锐气.Mischievous little beggars they are, both of them, but talk about keenness!这俩小家伙淘得要命, 可显起积极呀, 嘿!A few weeks'hsrd work should damp down his keenness.几星期的艰苦工作...

n.敏锐...

keenness的音标：...