中文翻译：

1. The liver helps to clean the blood. This is like the knowledge students get from teachers 

肝脏有助于清洁血液，这就像学生们从来老师们那里获得知识一样，

2. The lungs are the organs that use the oxygen we breathe.think of the oxygen as the life as we lead at school

肺是我们用来呼吸氧气的器官.把氧气看作我们学校必须过的生活.

3. The stomach is very useful as it stores the food we eat until we can digest it prperly. This similar to the learning process

胃也是非常有用的器官，因为它能储备食物直到我们能完全消化它们，这和我们学习知识的过程很相似

(1) 氧气是人生存必须需要的东西，学生在学校必须要做的事情就是学习

(2) 我们的胃慢慢消化食物的过程比喻我们逐渐学习并消化知识的过程

(3) 肝脏有助于清洁血液比喻学生从来那里学习有用知识为自己所用用来帮助清除我们缺点或者缺陷