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calves造句
121. We have isolated the fetuin from sera of newborn calves by ethanol fractionation in the presence of zinc and barium ions. 122. I thought I'd try wading into loneliness the way you enter the sea, easing myself into the bone-chilling cold a bit at a time — first toes, then calves, then legs. 123. They may attempt coitus with calves, ponies, sheep, pigs, dogs, and even ducks or chickens. 124. The breeding herds annually produce and sell a crop of calves.