trial and error

音标发音

I believe death for humans is the way of getting rid of accumulated errors - as in trial and error.
我认为死亡对人类来说是一种摆脱不断积累的错误的方式-比如尝试和错误。
Human beings were not the pinnacle of a purposeful creation; like everything else, they evolved by trial and error and God had no direct hand in their making.
人类不是一个目的性创造的巅峰之作；像其他一切事物一样，他们经过反复试验不断探索进化而来，上帝没有直接插手人类的创造。
As a side effect of rules 1 and 2 above, one should expect a migration to be a trial and error process to be done iteratively until a satisfactory result has been achieved.
作为规则1和规则2所产生的副作用，您应当期望移植操作是一个需要被迭代完成的试验和错误过程，直到得到一个满意的结果为止。

And that can take a little bit of trial and error."
In just a moment the hearts are gonna start flowing from bottom to top and the cookies are gonna start moving left and right and they seem to be somewhat synchronized with the music, perhaps based on trial and error by the student who implemented this one.
刚刚那一刻，那些爱心们从底部上浮到顶部,饼干人则向左向右移动,它们似乎都随着音乐的律动而变化着，也许这是那个制作该动画的同学,不断尝试的结果。
哈佛公开课 - 计算机科学课程节选
So it's a trial and error.
那么他反复尝试并得到错误答案。
哈佛公开课 - 计算机科学课程节选

As mentioned above, some trial and error is probably going to be required here.
ENGADGET: How-to: One-click audio news, synced with your iPod in Tiger

a way of achieving an aim or solving a problem by trying a number of different methods and learning from the mistakes that you make