Science A-Z · GK-2

58 Doing Work-Mid

Doing Work Written by Ned Jensen

内德·詹森著

"I have to do my work!" "Let's try to work harder!" "Work, work, work. That is all I do." Have you ever heard these sayings?

“我必须做我的工作!”“让我们努力学习吧!”“工作,工作,工作。 这就是我所做的一切。”你听过这些说法吗?

People do work every day. But what is work? This book is about work. It is about what work means. In science, work has a special meaning. In science, work means moving something.

人们每天都在工作。但是什么是功呢? 这本书是关于工作的。而是关于工作意味着什么。 在科学中,工作具有特殊的意义。 在科学中,功意味着移动某物。

You do work when you move something. You do work when you push or pull a wagon down a street. You do work when you lift books. You even do work when you turn the pages of a book. When you do these things you are moving something.

当你移动某物时,你是做功的。 当你在街上推或拉马车时,你是在工作。 当你举起书的时候,你确实在工作。 你甚至在翻书的时候也在做功。 当你做这些事情的时候,你是在移动一些东西。

You don't do work when you just push against a rock. The rock doesn't move. You don't do work when you think a lot. Thinking doesn't move anything. You don't do work if nothing moves.

当你只是推一块石头的时候,你没有做功。 石头不动。当你想很多的时候,你就不工作了。 思考不能移动任何东西。 如果没有东西动,你就不做功。

It takes force to move something. You use force to push and pull a sled. You use force to lift books. You use force when you twist or turn a doorknob. All these forces make something move.

移动某物需要力气。 你用力来推和拉雪橇。 你用力举起书。 拧或转动门把手时要用力。 所有这些力使物体运动。

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