English-Chinese/Heart

The heart is the organ of every vertebrate. It is a very strong muscle that is about the size of a fist. It pumps blood throughout the body. It has regular contractions which squeeze the blood out into other parts of the body.

心脏 是 每个 脊椎动物的 器官. 它是 一个 非常 强壮的 肌肉，与 拳头 大小 相当. 它 泵 血液 到 身体 各处. 它 有规律地 收缩，将 血液 挤出 到 身体的 其他 部位.