Each cow normally produces only one calf at a time.

在一般情况下，一头母牛每次只能产一头牛犊。

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Cows usually give birth to one calf every two to four years. At birth, elephants already weigh some 200 pounds (91 kilograms) and stand about 3 feet (1 meter) tall.

雌象每产下一只幼崽的时间是2至4年，幼象诞生时重约200磅(91公斤)，高约3英尺(1米)。

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The calf has two lower jaws, but only one mouth.

小牛犊有两下颚，但只有一张嘴。

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A calf is a young cow. A young female cow, especially one that has not yet had a calf, is called a heifer: H-E-I-F-E-R.

VOA: special.2009.07.21

One calf was stillborn and the other was located on a farm outside of California.

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The floods, however, damaged their home and washed away their livelihood two buffaloes, one calf, her sewing machine, and furniture.

FORBES: Pakistan Flood Victims Still Desperately Need Help

The next one is Arshavin - calf strain, three weeks.

CNN: STORY HIGHLIGHTS