tried-and-true的中文翻譯是什麼意思

There's a lot in sales and marketing that tried and true.

在銷售和營銷中有很多這樣的真例項子.

This is a tried and true way of saving water.

這是一種行之有效的節水方法.

And if old tried - and - true paradigms really aren't working, what does work?

而如果舊的試錯樣式真的已經過時, 什麼有用?

Now you can apply tried and true principles to your own game.

現在你能把揮杆八步法的真正原理應用到你自己的高爾夫運動中了.

Tried and True Rent - a - Car.

這裡是誠信租車公司.