写在后面的话：推销产品，是成为企业家不可缺少的经历。
Bottom line: Salesmanship is a necessary part of being an entrepreneur.
老师写在电脑上，单词就出现在后面的屏幕上。
The teachers write on the computer, and their words appear on the screen behind them.
老师写在电脑上，单词就出现在后面的屏幕上。
The teachers write on the computer, and their words appear on the screen behind them.
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