by trial and error

Many drugs were found by trial and error

很多药物都是通过反复试验才发现的。

We learn , in a sense , by trial and error .

从某种意义上说，我们通过反复试验来学习。

Children learn to use computer programs by trial and error .

孩子们通过反复摸索才学会运用计算机程序。

He learned to cook by trial and error .

他不断尝试学烹调。

That means progress will be made only by trial and error .

这就是说，只有不断尝试并犯错之后，才能取得进步。

You need to learn what works by trial and error .

你必须要通过实验和错误去学习什么是管用的方法。

Specific behaviour must be determined by trial and error .

特殊的行为必须是通过探索试验来决定。

You can learn how to use it properly by trial and error .

你可以通过反复试验来学习如何正确使用它。

There isn 't enough time to learn everything in life by trial and error .

人生实在没有足够的时间容我们凡事尝试，从失败中学习。

He learned technical skills by trial and error .

他通过不断摸索掌握技能。

trial She learned to cook by trial and error .

n.审讯；努力adj.试验的；审讯的她不断摸索学会了做饭。

Learn by trial and error .

通过反复试验学习。

These are issues that we 're currently in the process of sorting out by trial and error .

这些问题，我们目前正在靠试错法寻找解决方案。

Assuming we have predicted G , we can solve for N by trial and error .

假定我们已经预测到G，就可以用试误法来解N。

Methods To select best chromatographic condition by trial and error , making changes in sorbent , developing agent .

方法通过改变层析条件吸附剂、展开剂、显色剂，反复实验，筛选出适宜的层析条件。

He cannot carry a tune . Factorization of this equation by trial and error is not possible .

他不能够演奏这个调子。用试凑法对这个方程进行因式分解是不可能奏效的。

The above general rules allow the isopachs to be drawn by trial and error .

有了上述的一般规律，即可采用试凑法来描绘等和线。

Thesis constructs ANN models to simulate land use changes by trial and error on comparing the methods of constructed ANN .

本文在比较分析了有关ANN设计的方法的基础上，通过反复试验构造了模拟土地利用变化的ANN模型。

But much of this advice is broad and non-specific , leaving development teams to learn by trial and error .

但是大多数这种建议都太宽泛而且不具体，使得开发团队必须自己从尝试和错误中学习。

In actual production , the process planning of gear blank relies on expert experiences and is optimized by trial and error .

实际生产中，齿轮坯的生产工艺大都凭借经验设计，然后反复实验确定可行方案。

The general orientation and principles are already established , but we still have to work out specific rules and regulations by trial and error .

总的方向、原则有了，具体章法还要在试验中一步步立起来。

We were given no instructions how to do the work , so we had to learn to do it by trial and error .

没有人指导我们如何干这项工作，我们只有反复尝试摸索着干。

It has been proved by trial and error modelling and field data processing that the idea of conjugate migration is right and proper .

通过理论模型的试算和实际资料的处理，证明了共轭思想是成功的。

Since there is no precedent to build such a complex and unique country as China , we have to do it by trial and error .

建设中国这样一个独特而复杂的大国，我们没有现成的套路，只能边试边干。

The optimal depths of the wedge-shaped notch for different tapered transition lengths have been determined by trial and error .

对于不同渐变过渡段长度，其最佳楔形凹槽深度由实验试凑法得到。

The IRR can be found by trial and error by using a number of discount factors until the NPV equals zero .

内含报酬率可以采用验误法用一系列的折现数计算。

But I arrived at the chosen numbers of " spam " and " good " trigrams only by trial and error .

但我只是用试错法（trialanderror）才达到了“垃圾邮件”和“合法”三元模型所选定的数目。

Despite over more than one century of effort , it remains unsolved , and synthesis of new odorants still proceeds largely by trial and error .

尽管经过百年多的努力，它仍未能解决，而且新香料的分子结构设计和合成依然主要地依靠试验和改错的方法。

Neither of us had any formal business education and we learnt by trial and error , trusting we would make enough good decisions to outweigh the bad .

我们两人中谁也没有受过任何正规的商科教育，我们通过试错学习，而且相信我们会做出足够多的正确决策，来压倒那些错误决策。

Talkative people might learn communication skills by trial and error , but quiet people can learn them just as well by watching talkative people trying and erring .

健谈的人通过不断练习和犯错学会沟通技巧，安静的人通过观察健谈的人练习和犯错，同样也能学会。