The most important parts, the flowers, rarely fossilise. [VERB]

最重要的部分，即花朵，很少成为化石。

The survival of the proteins depends on the way in which bones are fossilised. [be VERB-ed]

蛋白质是否存留取决于骨头被石化的方式。

...fossilized dinosaur bones. [VERB-ed]

恐龙骨骼化石

What they seem to want to do in fact is fossilize the particular environment in which people live and work. [VERB noun]

他们似乎想要做的实际上就是让人们生活和工作的环境固定不变。

Needs change while policies fossilize. [VERB]

需要发生改变，但是政策僵化不变。