因为被送到实验室的证物很难保存易于辨认的部位，更不可能是整只动物，科学家们必须从一些碎片中辨认物种。
Because evidence sent to the lab rarely contains easily recognizable parts, much less a whole animal, the scientists must work to identify species from limited fragments.
因为被送到实验室的证物很难保存易于辨认的部位，更不可能是整只动物，科学家们必须从一些碎片中辨认物种。
Because evidence sent to the lab rarely contains easily recognizable parts, much less a whole animal, the scientists must work to identify species from limited fragments.
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