In fact, it's keratin which makes them flexible and without it they would be very rigid.

实际上，是角蛋白使它们变得富有弹性，并且没有角蛋白的话，它们会变得非常坚硬。

youdao

It's strong, yet very flexible.

它很坚固，但也很灵活。

youdao

It works for us because it's flexible, simple and reports information in a very customizable format.

我们用它工作，因为它灵活，简单和可以以自定义的方式报告信息。

youdao

"He was making a very fair point, which most people recognise, about how it's important to have flexible labour markets and that people are encouraged to be active in looking for work, " the spokesman said.

BBC: Iain Duncan Smith tells Merthyr jobless to 'get on bus'