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puff of wind

put on air 装腔作势;摆架子

  • These use light waves to scan individual green beans, which are rejected by a puff of air if they show up as defective.

    ECONOMIST: Espresso coffee

  • After several repetitions, the animals learned to blink after hearing the noise in anticipation of the puff of air, and they timed their blinks to avoid it.

    ECONOMIST: Neuroscience (2)

  • The researchers played a sound and then, after a set period of time that varied between each group, blew a puff of air into the rats' eyes, making them blink.

    ECONOMIST: Neuroscience (2)

  • Moreover, the rats that successfully completed the more difficult task, which involved a longer gap in time between the sound and the puff of air, had retained more new neurons than those assigned easier tasks, with shorter gaps.

    ECONOMIST: Neuroscience (2)

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