有三颗心脏的章鱼

章鱼是一种生活在海里的软体动物。它有八条腕足，没有骨头。但最令人惊讶的是它体内的构造：章鱼有三颗心脏，不是一颗。

The octopus is a soft animal that lives in the sea. It has eight arms and no bones. But the most surprising thing is inside its body. The octopus has three hearts, not one.

其中两颗心脏把血液送到鳃部，血液在那里从水中吸收氧气。第三颗心脏再把这些血液送到身体的其他部位，让章鱼有能量活动。

Two of the hearts push blood to the gills. There the blood takes in oxygen from the water. The third heart then sends this blood to the rest of the body, so the octopus has energy to move.

章鱼的血液是蓝色的，不是红色的，因为里面含有铜。这种特殊的血液帮助章鱼在寒冷的深水中生存。章鱼游泳时，它的主心脏会停止跳动，所以它更喜欢在海底行走。

The blood of an octopus is blue, not red. It is blue because it has copper inside. This special blood helps the octopus live in cold, deep water. When the octopus swims, its main heart stops, so it likes to walk on the sea floor instead.