Piaget's example would be a baby who's used to sucking on a breast might come to suck on a bottle or on a rattle.

皮亚杰举例说,一个习惯吸吮乳房的婴儿,可能会去吸吮奶瓶或是拨浪鼓

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And it's kind of fun. They're sucking up to you.

这挺有趣儿的，他们讨好你。

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You don't need your brain for newborn sucking, limb flexation in withdrawal from pain.

新生儿吸吮乳汁无需大脑的参与,疼痛时的四肢回缩无需大脑参与

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A baby will form his mouth differently depending on what he's sucking on.

婴儿会因为吸吮物体的不同,而改变他的嘴型

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And what they did was they used a sucking method.

它们应用了一种吮吸的方法

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Everything is sucking and chewing and so on.

包括吮吸，咀嚼等活动。

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