calve
[kæv]
vi.
生小牛;
（冰川）崩解;
vt.
生（小牛等），产（犊）;
使（冰川）崩解;
例句:
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The whales migrate some 6,000 miles to breed and calve in the warm lagoons.
鲸会迁移6,000海里左右，到温暖的环礁湖生殖繁衍。
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When his cows calve each year he keeps one or two calves for his family.
他的母牛每年产犊时，他都给自家留上一两头。
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Their bulls gender without fail; their cows calve and do not miscarry.
他们的公牛交尾,无不成功; 母牛产子,决无流产.
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Twice a year, you really have a good count, you know, when you calve, and then when you sell.
来自VOA