1.known to be good or effective
1.Had it been a tried and tested technology, there was no need for trust as you would have already known the bits and pieces of it.
假使它们被尝试和测试过了，那就没有信任的必要了，因为你已经对它了如指掌。
2.Eventually it had to abandon them for the tried and tested metal ones.
最终它只好放弃使用碳复合材料，使用经过测试和验证过的金属制造叶片。
3.It follows the tried-and-tested concept used in the first volume, although each volume can be read independently of the other.
虽然每体积可以被不管另一个读，但是它遵循在第一个卷里使用的想办法测试的概念。
4.With more than 30 years of experience in teaching English, Professor Fung has tried and tested many methods of teaching English and ESL.
冯教授为资深教育学者及著名作家，拥有逾三十年英语教学及研究的经验，在英语教学及英语为第二语言的学习方法上作多方面尝试。
5.The upgrading and refining facilities required to turn tar to oil cost billions of dollars, but the technology is tried and tested.
虽然需要将焦油砂转化为石油的升级和精炼设备成本高达数十亿美元，但这种技术仍在尝试和试验阶段。
6.The reason is the tried and tested policy and practice of limiting spending increases to within the trend growth rate of GDP over time .
这全赖我们采用久经考验的政策和做法，就是在一段期间内，政府开支增长不得超逾本地生产总值趋势增长。
7.But unless the association comes up with a convincing argument, the miners' tried-and-tested strategy will surely work again.
不过，除非中国钢铁工业协会能提出有说服力的理由，否则矿业公司屡试不爽的策略将肯定会再次奏效。
8.And a shot of chocolate when things are bad is a tried and tested way of cheering oneself up.
经过验证，情况变糟时，一块巧克力可以让人变得兴奋。
9.With the president's future uncertain, his government has descended into tried and tested repression.
由于总统的未来不是很确定，他的政府已经开始试图尝试进行镇压。
10.The common belief that agile departs from established, tried, and tested pre-historic waterfall software development is incorrect.
很多人认为敏捷方法背弃了成熟、可靠、久经考验的传统瀑布式软件开发方法，这种观念是错误的。