rhythmic gymnastics
US /ˌrɪð.mɪk dʒɪmˈnæs.tɪks/
UK /ˌrɪð.mɪk dʒɪmˈnæs.tɪks/

1.
新体操
a sport in which gymnasts perform on a floor with a rope, hoop, ball, clubs, or ribbon, combining elements of ballet, gymnastics, dance, and apparatus manipulation
:
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She has been practicing rhythmic gymnastics since she was five years old.
彼女は5歳から新体操を練習しています。
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The athlete performed a stunning routine in rhythmic gymnastics.
その選手は新体操で素晴らしい演技を披露した。