单语范例（未经PONS编辑处理）
英语
- It's difficult to study animal emotions with formal rigor, and the notion that animals might have rich inner lives was disregarded for much of the 20th century.www.wired.com
- He hoped as more is discovered about animal emotions and behaviour, that attitudes towards them will change.www.stuff.co.nz
- Those who reject that animals have the capacity to experience emotion do so mainly by referring to inconsistencies in studies that have endorsed animal emotions.en.wikipedia.org
- Animal emotions are a relatively new area of study and already the results have been somewhat surprising.www.thestar.com
- Some who oppose the concept of animal emotions suggest that emotions aren't universal, including in humans.en.wikipedia.org
- The intention is to record real animal emotions and display their similarities with humans.entertainment.ie
- But just because scientists don't know how to study animal emotions doesn't mean animals don't experience them.ww2.kqed.org
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