1.Being happy is a sort of unexpected gain. But staying happy is an accomplishment, an achievement of soul and character.
快乐是一种意外的收获，但保持快乐却是一种成就，一种心灵和品性的胜利。
2.On Monday, reports showed a marked improvement in service-sector activity in March and an unexpected gain in pending home sales in February.
周一公布的报告显示，美国三月份的服务业活动有明显改善，而二月份成屋签约销售指数也出人意料地上涨。
3.Magic is an ever-changing game, at any time give you an unexpected gain, there is happiness, there are happy, there is laughter.
魔术是一个千变万化的游戏，随时带给你出乎意料的收获，有快乐，有开心，有欢笑。