Turn down: 拒绝
His proposal was turned down.
他的提议被拒绝了.
Rewarding: of an activity, etc. 活动等 worth doing; that makes you happy because you think it is useful or important 值得做的;有益的
a rewarding experience/job
有益的经历/工作
Teaching is not very financially rewarding(= is not very well paid).
教书不会有很高的报酬.
every cloud has a silver lining: every sad or difficult situation has a positive or hopeful side 黑暗中总有一线光明