每日口說挑戰 【看影片長知識】為什麼「心臟癌症」那麼少見？Why Is Heart Cancer So Rare?

今日挑戰句子

But unlike cells in other organs, our heart cells do almost all of their dividing during fetal development. Sometimes, but not often, tumors can form in fetuses while these cells are still able to divide.

但心臟細胞和其他器官不同，幾乎在胚胎發育的過程中就同時完成了分裂，有時，但不常，在心細胞還在分裂的時候，腫瘤會在胚胎時期形成，