If you always tell them why (when issuing instructions and claims), they will better understand your intentions and feel that your ideas are more important and they will be more willing to listen to you.
如果你（在发出指令和诉求的时候）总是告诉他们你的原因，他们就会更好地理解你的意图，并且觉得你的想法更重要，他们也就更愿意听你的。