cardinal rule

基本解释

The cardinal rule of taxation is that whatever you put a levy on, you’ll inevitably get less of.
税收最主要的一个规律就是，无论你对什么征税，不可避免地会相应损失一些。
Many web companies forget the cardinal rule of e-commerce: Web shoppers want as little hassle as possible.
很多的网络的公司忘记了这一电子商务网站的主要原则：网购者想要尽量的减少麻烦。
So the cardinal rule of all web development, and I can’t stress it enough, is: Never, Ever, Trust Your Users. Assume every single piece of data your site collects from a user contains malicious code.
有一条web开发的基本原则，我重复多少遍都觉得不够，那就是：千万不要相信你的用户，同时要假设你网站中的每个数据单元都是从用户那里收集来的恶意代码。
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The cardinal rule to remember is: children, although small, are certainly not stupid.
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