Both infants and older children often respond to a ride in the car.

乘车通常对婴儿和幼儿都有效。

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Another test was done with slightly older infants at bedtime.

另一项试验的对象是稍大一些的婴儿。

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Another test was done with slightly older infants at bedtime.

另一项试验的对象是稍大一些的婴儿。

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