A fast, irregular heartbeat that you can feel in your chest.
Feeling anxious, she had palpitations and worried about her health.
感到焦慮,她出現了心悸,擔心自己的健康。
A muscle that suddenly twitches or contracts without you trying to make it move.
He noticed palpitations in his leg after a long run.
長跑後,他注意到腿部有顫動。