Fancy his surprise when he saw that it was not a hand, but a cat'spaw.
想想看,当他发现那不是一只手,而是一只猫爪时,有多么惊讶。
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Resembling a huge paw print, the Cat'spaw Nebula is a star-formation region, with stars of close to 10 solar masses produced there in the past several million years.