heart發音heart意思heart符號Heartheart中文heart歌詞How to pronounce heartheart disease中文heart門禁heart disease中文heart翻譯Heartheart | Structure, Function, & Facts | Britannica
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Our editors will review what you’ve submitted and determine whether to revise the article.Heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving c
