词汇	couplets premature beat
释义	couplets premature beat 成对期前收缩
随便看	The pound rise in step with the dollar The pound slump on the foreign exchange market the pound sterling The Pouring system CAD the povertv-striken students the poverty and richness gap the poverty due to disease the poverty headcount ratio the poverty issue the poverty law the poverty level the poverty line the poverty of her imagination The Poverty of Philosophy the poverty of stimulus the poverty of the soil the poverty rate the poverty-stricken area the poverty-stricken students the poverty trap the powder medicine of injection the powder mixed edm the powder quartzite the powder sprays pile the powder spurts pile