"悸动" (jī dòng) can be translated as "palpitation" in Engpsh. It refers to an abnormal awareness of the beating of one's own heart, often accompanied by a sensation of the heart beating too fast, too hard, or irregularly. Palpitations can be caused by various factors, including physical activity, stress, anxiety, hormonal imbalances, and certain medications. Here are a few example sentences in Engpsh with their Chinese translations:

"I feel a strong palpitation in my chest." (我胸口有强烈的悸动感。)
"My heart was racing and I had palpitations." (我的心跳得很快，而且有悸动感。)
"The doctor said my palpitations were caused by anxiety." (医生说我的悸动是由焦虑引起的。)