This phenomenon was observed by Craig Packer, a wildlife biologist at the University of Minnesota.

这种现象是明尼苏达大学的野生生物学家克雷格·帕克尔观察到的。

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In the closet hung two pairs of jeans crease-ironed and folded neatly over wire hangers, on the floor a pair of worn packer boots he thought he remembered.

衣柜里挂着牛仔裤，仔细烫过，并且折出笔直的裤线。

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Several years of experience as a helper, tender or packer in the same company may be required.

可能需要同一家公司的助手，看管者或包装工的多年的经验。

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By contrast, a bunch of grapes travels from the farm to a packer, to a shipping centre, to a warehouse, to a shop and finally to a consumer's fridge.

ECONOMIST: Tech.view

The manufacturer, packer or distributor of a dietary supplement is required to notify the FDA of any adverse events linked to its product, according to agency spokeswoman Tamara Ward.

CNN: Caffeinated chewing gum catches FDA's eye

Milton Packer, a cardiologist at the University of Texas, Southwestern, says he doesn't know whether the risk was real or not.

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