keen adj. eager, active, sensitive 渴望的,敏锐的,精明的
词组 be keen on ,be keen to do 对…有强烈兴趣
keen edges 锋利的刀刃 keen eyes 敏锐的眼光
keep v (keep-kept-kept) cause somebody/something to remain in a specific state / position保持
词组 keep a seat / position / money 留座位/ 位置 / 钱
keep a restaurant 经营饭店 keep a large family 养活一大家子
keep chickens 养鸡 keep one’s promise遵守诺言
keep the law 遵守法律 keep a door 看门 keep a diary记日记
