fossilise

1. The most important parts, the flowers, rarely fossilise
   最重要的部分，即花朵，很少成为化石。
2. The brain itself does not fossilise, but the inside of the cranium retains an impression of its contours.
   脑部分本身是不会变成化石的，但在头盖骨内部却还保留着脑的轮廓。
3. Because hard shells fossilise, and are therefore more readily preserved than soft tissue, scientists had an incomplete and biased view of the marine life that existed during the Ordovician.
   由于封存坚硬的外壳，因此比软组织更容易保存，科学家们对海洋生物的存在，在奥陶系不完整和有偏见的观点。

verb

1. become mentally inflexible

   Synonym:    fossilize

2. convert to a fossil
   1. The little animals fossilized and are now embedded in the limestone

   Synonym:    fossilize