One interesting study was successfully done with chimps. Six chimps were trained to operate a special vending machine. One ripe grape came out for each while taken put into the shot.

（英译汉）通过黑猩猩成功地完成了一项有趣的研究。 训练六只黑猩猩操作特殊的自动提货机。当黑猩猩把机器击中，一颗成熟的葡萄就会从里面掉出来。

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One interesting study was successfully done with chimps. Six chimps were trained to operate a special vending machine. One ripe grape came out for each while token put into the slot.

曾经对黑猩猩成功地进行了一项有趣的实验，实验对六只黑猩猩进行训练，让它们操纵一台专用售货机，往投币孔里塞？入一枚白色筹码可得到一颗热葡萄。

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