tried-and-true ['traɪdən'tru:]

例句:

• There's a lot in sales and marketing that tried and true.
  在销售和营销中有很多这样的真实例子.
  
• This is a tried and true way of saving water.
  这是一种行之有效的节水方法.
  
• And if old tried - and - true paradigms really aren't working, what does work?
  而如果旧的试错样式真的已经过时, 什么有用?
  
• Iriarte says pre-Columbian farming methods offer a tried-and-true alternative.
  来自VOA
• Instead he was tried, and yesterday found guilty.
  来自THETIMES
• The way nature does things are tried and tested.
  来自SA