你能猜出这个谜语吗？
The answer to this riddle lies in the metabolic activity of early photosynthetic life-forms that slowly but surely transformed the chemical composition of Earth's atmosphere.
这个谜题的答案在于早期光合生命形式的新陈代谢活动，这种活动缓慢但一定改变了地球大气的化学成分。
Show me how to solve this riddle.
告诉我这个谜语怎么解。
猜猜这谜语！
The answer to this riddle is very interesting to me.
这个谜题的答案让我非常感兴趣。
I am given a clue to solve this riddle.
有人给了我解开谜语的线索。
Clearly this riddle is referring to Mr. Freeze.
很明显，这个谜题在暗示急冻人。
Read more about this riddle of the brain on the next page.
请阅读下一页的大脑谜题获得更多的信息。
You don't need to know anything about botany to answer this riddle .
你不需要知道任何植物学的知识来回答这个问题。
He who has explained this riddle has explained my life. Yet who was there among my contemporaries that understood this?
谁能解释这个谜，他就能解释我的一生。可是当代人有谁能了解这一点？
The answer to this riddle lies primarily in the totally different ways colors are achieved with light and with pigments.
这个谜的答案主要在于光线和颜料构成颜色的方法是完全不同的。
Lost somewhere in the blank spot in the middle of the Jurassic lies the answer to this riddle: how did some dinosaurs go from one era to the next?
探索侏罗纪中期的空白时期，便可解开这道谜题：有些恐龙是如何跨足下个年代？
This riddle is too easy for me.
这个谜语对于我来说太简单了。
This riddle is too difficult for me.
这个谜语对于我来说太难了。
This riddle puzzles me. I can't solve it by myself.
这个谜语让我困惑，自己解不出来。
This riddle puzzles me. I can't solve it by myself.
这个谜语让我困惑，自己解不出来。
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