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您即将离开知乎,请注意您的帐号和财产安全。
https://books.google.com/books?hl=en&lr=&id=5WH9RnfKco4C&oi=fnd&pg=PP1&dq=tyrannosaurus+forelimb&ots=085SR13FKx&sig=GT9itoDZkrMAD_7CpNPE7czFQU8#v=onepage&q=tyrannosaurus%20forelimb&f=false