This was first observed by an MIT engineer, who filmed a cat lappingliquid in 1940.
这最早由MIT 的一个工程师在1940年发现,他当时拍下了一只小猫舔水的画面。
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Suckers, on the other hand, have a tube-like mouthpart called a proboscis that allows them to get liquid by sucking or lapping, whether from the nectar of flowers or from a soda can.