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After decades of fossilized , state-dominated economies , the arab spring now needs an economic revolution .

阿拉伯之春地区经过数十年僵化的、国家主导的经济体制，如今同样需要一场经济革命。

It started with a chunk of fossilized resin from the dominican republic .

这要从来自多米尼加共和国的一块树脂化石切片说起。

The scientists also analyzed fossilized bone collections from ancient hominid sites in spain , the u. k.and the caucasus region .

科学家们还分析了从西班牙、英国和高加索地区的古人类遗址处出土的骨骼化石。

Fossilized bones are essentially solid lumps of rock , which means that mounting them into a skeleton is an enormous challenge .

骨化石基本上都是坚硬的岩石块，这意味着把它们组装成一具完整的骨架是巨大的挑战。

Another team found the fossilized remains of what they think is humankind s first walking ancestor , from 4 million years ago .

另一个团队在残骸的化石中发现了他们所认为的四百万年前人类最早的直立行走祖先。