palpitation
noun [ usually plural ] uk/ˌpæl.pɪˈteɪ.ʃən/ us/ˌpæl.pəˈteɪ.ʃən/
（心脏的）悸动
the feeling that your heart is beating too quickly or not regularly
He ended up in hospital with heart palpitations. 他因心悸而最终不得不住院。
have palpitationshumorous 震动，震惊
to be very shocked
My mother will have palpitations when she sees my new boyfriend. 我母亲看到我的新男友一定会大吃一惊。