Going through hardships. And changing step by step, slowly, gradually.

经历苦难，一步步地改变，缓慢渐进地实现。

He added, Now it is our task to change that image step by step.

他还指出，" 如今，我们要做的是逐步扭转这一形象。"

Don’t worry about it, just drive. Oh, no, the light is about to change. . . step on it!

别担心，开就行。哦，不，这个信号灯马上就要变了。。。加大油门！！

But after the financial crisis, there's been a step change.

但金融危机之后， 情况发生了巨大变化。

No, I think a step change of two, three, five, 10 years.

不，我认为是两年、三年、五年、十年的一步变化。