1、 Even when demonstrator hens reacted with obvious disgust to a specific food,via vigorous head shaking and bill wiping,there was no evidence that observers subsequently avoided eating that food.
即使是当作为演示的母鸡对某种特定的食物表现出明显的厌恶，比如使劲摇头和擦拭嘴，也没有证据表明它们随后会避免食用这种食物。
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