It can sit down, roll over, and even play dead.

它会坐下、打滚，还会装死。

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Like trainers raising dog puppies, the scientists gave the Wolf pups intensive obedience training, teaching them to sit, lie down, roll over, and look into a person's eyes.

就像训犬师训练小狗崽一样，科学家对小狼崽进行了强化口令训练，教它们坐下、躺下、打滚以及注视人类的眼睛。

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Or perhaps you'll sit down, roll up your sleeves and play your frustrations away yourself.

又或者，你会亲自坐在钢琴前，挽起袖管弹上一曲，让挫败感消散在琴声里。

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He also had the idea that he would make it narrow enough so that when you're boarding an airplane you can still roll it down the aisle of the airplane-- it just fit perfectly.

他还想到要将把手弄的窄一点,以便登机进通道的时候,还能拖着箱子走-,这非常符合当时的需要。

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She carelessly drops them onto a chair she is standing near, so that the rings, necklaces and bracelets fall down and roll under the seating.

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As you roll down the street, the display's background features the sun and clouds.

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If the terrain is downhill it could simply become a ball and roll down.

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