水是一个是否有生命存在的关键问题，即使是以微生物的形式，火星上和地球上都曾经存在，所有已知的生命都需要水。

Water is a key to the question of whether life, even in the form of microbes, ever existed on Mars. On Earth, all known forms of life require water.

youdao

存在一些已知浏览器和可能会在浏览器的期望和它在压缩内容方面的收到中造成的不匹配的代理的问题。

There are known issues with browsers and proxies that may cause a mismatch in what the browser expects and what it receives with regard to compressed content.

youdao

考虑到对于一系列存在着答案的已知问题而言，只需作出如此微不足道的改变就已经足于解决了，问题是为何它们不在数年前就这样做呢？

With such a relatively trivial change for a known set of problems with the answer already in place, the question is why didn't they do so years ago?

youdao