The first one can be handled by what is know as progressive enhance or graceful degradation.

第一个级别的可访问性可以通过所谓的“逐步加强（progressive enhance）”或着“优雅降级（grace degradation）”来实现。

youdao

PHP's array_filter is an example of what is know in functional programming as a higher-order function.

php的array _ filter是函数式编程语言中高阶函数的一个例子。

youdao

The software works for problems whose form is know but whose particulars aren't; slider bars allow users to set the values for which they want the problems solved.

这个软件可以用来解决那些模型已知，详细结果却未知的问题；滚动条允许用户设置他们希望解决的问题的参数值。

youdao

If you visit the western mountain and plains state of Montana you will know why it is known as Big Sky Country.

VOA: special.2009.08.16

Depending on what kind of chemistry you go in to, you might accidentally memorize parts of the table, which is fine, but what you really want to know how to do is know how to use the periodic table.

取决于你今后从事哪个方向的化学研究，你可能会不经意地记住周期表的某一部分，这就够了，但是要注意,你真正需要知道的是如何使用元素周期表。

麻省理工公开课 - 化学原理课程节选

Yeah, yeah, you know like, there is always, you know, the issue where there's a lot of students who want space

是，是，你知道，总是这样，你知道，问题在于那么多学生都需要空间，

学生会馆的实习部门 - SpeakingMax英语口语达人

But the least we should be able to do is know who they are.

WHITEHOUSE: Limiting the Influence of Special Interests

More of their striatal cells contained a protein called albindin which is know to protect neurons from damage.

BBC: Lifestyle link to Huntington's disease

But Al Anabi, or The Maroon as the team is know, managed to reach the quarterfinals in the end.

CNN: Five things we've learned from Qatar's Asian Cup