[计] 基本操作系统, 成批处理操作系统

[医] 牛属

[ noun ]
wild and domestic cattle; in some classifications placed in the subfamily Bovinae or tribe Bovini
<noun.animal>

Bos \Bos\, prop. n. [L., ox, cow.] (Zo["o]l.)
A genus of ruminant quadrupeds, including the wild and
domestic cattle, distinguished by a stout body, hollow horns,
and a large fold of skin hanging from the neck.
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