His efforts were amply rewarded.

　　他的努力得到了豐厚的回報(bào)。

　　All my efforts ended in failure.

　　我的一切努力最后都無濟(jì)于事。

　　Their efforts to revive him were futile.

　　他們努力使他蘇醒，但失敗了。

　　Efforts to preserve the peace have failed.

　　維護(hù)和平的努力失敗了。

　　His efforts to get a job proved unsuccessful.

　　他求職的努力都落空了。