In the first experiment the researchers put a bowl of fruit in an enclosure and allowed pairs of age-matched chimps or bonobos to enter.

在第一个实验中，研究人员把一碗水果放在一个围场里，让同一年龄的一对对黑猩猩和巴诺布猿分别进入围场。

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In the first experiment, the researchers put a bowl of fruit in an enclosure and allowed pairs of age-matched chimps or bonobos to enter.

在第一个实验中，研究人员把一碗水果放在一个围场里，让同一年龄的一对对黑猩猩和巴诺布猿分别进入围场。

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But in one experiment, diners giving a 'bottomless bowl' which automatically refilled with soup, ate 73 per cent more than those given normal bowls - and didn't even realise it.

不过在一项实验中，使用“不见底”的碗喝汤的人在且安全没有意识到的情况下，会比使用正常大小碗的人多喝掉近73的汤。

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