crayfish

/ˈkreɪfɪʃ/
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A crayfish is a small shellfish with five pairs of legs which lives in rivers and streams. You can eat some types of crayfish. 淡水龙虾

noun [专属名词] 小龙虾

Earthworms, crayfish and tadpoles are examples. 蚯蚓、小龙虾和蝌蚪都是实例。

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Humans have 46 chromosomes, peas have 14, and crayfish have 200. 人类有46个染色体,豌豆有14个,而小龙虾有200个。