n. 
血酶原,前血酶
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envoy, envoyer, envoyship, envy, enweave, enwheel, enwind, enwomb, enwrap, enwreathe,
相似单词
prothoate, prothole, prothonotary, prothoracic, prothorax, prothrombase, prothrombin, prothrombinase, prothrombinemia, prothrombin-factor,