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to throb; to beat fast
彼女の胸は期待に高鳴った。
Her heart pounded with anticipation.
結婚式当日、新郎は胸が高鳴って落ち着かなかった。
On his wedding day, the groom's heart was racing and he couldn't calm down.
クリスマス前は胸が高鳴るものだ。
Before Christmas, one's heart always pounds with excitement.