At the micro level, your heart cells must work together to keep your heart beating.
在微观的层次上，你所有的心脏细胞必须一起努力来保持你心脏的搏动。
There is a famous song Forever Young, it reminds people to keep young at heart.
有一首出名的歌叫“永远年轻”，它提醒人们保持心理年轻。
Open your heart to me, and keep yourself at ease because of me.
交心吧，放在我身上；放心吧，交在我身上。
靠近你的内心。
靠近你的内心。
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