复数： enhancements

And what is progressive enhancement and graceful degradation ?

还有，什么是逐渐地增强和容错性？

Plus , a lot of usability enhancement have recently added .

另外，很多增强的用法最近也在添加。

But in endurance sports such as cycling , performance enhancement can be especially deadly .

但是在耐力项目例如自行车运动，性能增强物可能尤为致命。

Use progressive enhancement to ensure that everyone benefits from every element on the page .

利用渐进增强确保每个人都能从页面的每一个元素身上受益。

That said , it 's not the end of feature detection and progressive enhancement .

即便如此，这并不是说特性检测和渐进增强也将不再需要。