学习过物理的人都知道,物体运动会发生摩擦,而经常摩擦就会导致磨损。工厂里,工人叔叔经常在机器的特定部位涂抹润滑油,以减轻磨损程度,保证机器良好运转。我们人体也如同一台机器,无时不在运动,即使晚上睡觉,心脏还在扑通扑通地跳动呢!你知道吗?人体这台“机器”同样需要润滑油。 People who have studied physics know that things get rubbed by the exercise, and frequent rubbing can lead to wear. In the factory, the worker’s uncle often apply lubricant to specific parts of the machine to reduce the degree of wear and ensure the machine runs well. Our human body is also like a machine, always exercise, even at night, the heart is still thump thump thump it! You know this body “machine ” also need lubricating oil.