他紧紧捂住胸口，感受到自己的心脏在剧烈跳动。

He clutched his chest, feeling his ___heart pounding wildly.

这个公园位于城市的中心。

The park is at the ___heart of the city.

别担心，亲爱的，一切都会好起来的。

Don't worry, ___corazon, everything will be fine.