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来源:雅诚德英语网
Fossil formations like the Burgess Shale show that evolution cannot always be thought of as a slow progression.
像波基斯页岩这样的化石层表明进化不应该总被看作是一个缓慢的过程。
Fossil formations like the Burgess Shale show that evolution cannot always be thought of as a slow progression.
像波基斯页岩这样的化石层表明进化不应该总被看作是一个缓慢的过程。