ダンスの動きがハッキリしている。
His movement is well-defined.
Her dance moves are sharp.
ダンスの動きがしなやかだ。
Her dance moves are smooth.
音楽に合わせて体を動かす、踊る
Dance to the music
Move your body to the music
動きが音に合っていない
His movement does not match the sound.
リズムに乗る
He gets into the rythm.
Get into the groove
Catch the rhythm.（初心者が音がとれてるニュアンス）
Ride the beat.（経験豊富なパフォーマンスが音を制しているニュアンス）
動きを音に無理やりはめこむ
He forcibly fit his movements into sound.
He forcibly fit his movement into the drum sound.
動きが小さい
His movement is small.
足さばきがきれい
light footed.
彼が踊る時、いつも肘の位置が低い
When he dances, his elbow position
