Scientists set up several experiments allowing the monkeys to "steal" food from human testers, each of whom dressed in a different color T-shirt and baseball cap — either red, green or blue.
科学家设置了几个实验，让这些猴子可以从测试人员那里“偷”到食物，而测试人员则身着不同颜色的T恤和棒球帽——可以是红色、绿色或蓝色。
When I meet Rupp he is wearing a baseball cap, blue denim shirt and jeans, and cowboy boots.
我见到鲁普的时候，他戴着一个棒球帽，蓝色的丁尼布上衣和牛仔裤，还有一双牛仔靴。
Evans, 34, kept it casual in a light polo, black pants and a navy blue baseball cap.
同样34岁的克里斯·埃文斯身着便装，浅色POLO衫、黑色裤子和海军蓝棒球帽。
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