我们继续要求他们履行上述承诺。
研究人员要求他们在电视机关闭后继续吃土豆片。
They also were given chips to eat when the television was off.
研究人员要求他们在电视机关闭后继续吃土豆片。
They also were presented chips to eat when the television was off.
研究人员要求他们在电视机关闭后继续吃土豆片。
They also were presented chips to eat when the television was off.
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