Although you may hear these two terms thrown out interchangeably, they are in fact two very different animals complete with different personalities and world views.
也许你常常听到这两个词混用，但实际上他们就像两种完全不同的动物，有着不同的特征和世界观。
Scientists prefer to work with the offspring of animals raised in laboratories because knowledge of the creatures’ complete medical history makes them more dependable.
科学家更乐于用实验室里的动物们的宝宝来做实验，因为对这些动物用药史的了解使得它们的实验数据更可靠。
Rolling hills, fields and rivers — complete with picnicking families, sports being played on a village green and farmyard animals — made up the elaborate set.
连绵起伏的山丘，田野与河流，野餐家庭的画面相辅相成；动物们在绿色的农场玩耍构成了一幅精美的图画。
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