青蛙也不例外。根据动物行为杂志发表的研究表面，它们似乎特别喜欢在沟槽里聆听柔顺的声音。
Frogs, too, apparently like to hear something smooth when they're in their groove, according to research published in the journal Animal Behavior.
不都是那样柔顺地接纳了无数尖锐的割伤却默无一语的砧板吗？
Are not as supple as numerous sharp cuts but silent word block?
蜡：一类来源于动物、植物、矿物的或合成的柔顺性物质中的任何一种，和脂肪相比它较不油腻、较软也更脆。
Wax: Any of a class of pliable substances, organic compounds of animal, plant, mineral, or synthetic origin, less greasy, harder, and more brittle than fats.
触感轻柔顺畅，不油腻，易于涂抹。
触感轻柔顺畅，不油腻，易于涂抹。
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