最常见的多胎是双胞胎，两个婴儿同时出生。
The most common multiple births are twins, two babies born at the same time.
绵羊的多胎性状是养羊业获得更多经济效益的重要途径。
The trait of prolificy of sheep was an important approach increasing more economic benefit.
绵羊的多胎性状是养羊业获得更多经济效益的重要途径。
The trait of prolificy of sheep was an important approach increasing more economic benefit.
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