······我想要这样的:in order to keep healthy ,we'd better either climb the hills or walk around to park at the weekend
追答If one would like to keep fit (healty), he can accomplish it by controlling his food intake, maintaining a healthy diet, and getting enough sleep.
如果某人想要保持健康,他/她可以通过控制摄入,保持饮食健康和睡眠充足来获得。