changing fortunes meaning in English

改变命运
天赐奇才

Through all his changing fortunes , he never lost courage
任凭命运变换，他从不丧失勇气。
But the changing fortunes of nuclear power have accentuated the ups and downs for uranium
然而，核大国的命运变化突出了铀的起伏。
Keep interested in your own career , however humble ; it is a real possesion in the changing fortunes of time
要珍惜你的事业和工作,哪怕低微,随著时间的流逝和变动,它是你真正拥有的财富
My nightcollege study would be end after three school semesters , and i eager to got more achievements during these future life in study , because i always believed that knowledge is power , knowlege change fortune
我的夜大学习还有三个学期就要结束，在未来的学习生活里，我渴望更多的收获，因为我坚信，知识就是力量，只是改变命运！