单词	roton
释义	roton noun ro·​ton ˈrōˌtän plural -s : one of the hypothetical energy quanta that are concerned along with phonons in the behavior of liquid helium II compare second sound Word History Etymology Latin rotare to rotate + English -on First Known Use 1941, in the meaning defined above
随便看	belle-lettristic Belleau belled Belleek belleeks beller belleric belleropha Bellerophon bellerophons belles belles lettres belles-lettrism belleter belleters belletrism belletrisms belletrist belletristic belletrists Belleville Bellevue bellflower bellflower family bellflowers

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