"I have been a salesman for 20 years," he says, "and I know that whenever a salesman's customers do not want to buy, he starts blaming someone else."
可是就连他也说出这样的话: 「我做过20年的推销员,我知道每当一个推销员的顾客不想买东西,他开始埋怨其他人」。
Right now at this point in our course, whenever you have a problem where there is some body and someone says, "Write all the forces on it", what you have to do is very simple.
现在在我们这个课程里,如果你遇到一道题目,题目给了你一个物体,并要求你,"写出该物体所受的所有力",你要做的其实很简单
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