You got to assign a dollar value to know whether you want to prevent those deaths by banning the use of cell phones in cars.
你必须用金钱来衡量,是否需要禁止司机使用手机,来避免此类事件发生。
But then, I realized it was inevitable that I had to use it
之后才意识到,使用这个是不可避免的。
Again, so as we don't get confused, normally we use S for strategy, but let's use P since they're prices.
为了避免混淆,通常我们用S表示策略,但是这次我们使用P,因为它代表价格
And you avoid those sorts of moves.
你会尽量避免使用那些着数
You're not going to start for the rest of your life if you ever need to solve a problem with a computer from scratch, odds are you're going to reach for some off the shelf packages or libraries or tools that other people wrote so that people like us don't have to reinvent the wheel again and again.
如果你想用Scratch来解决问题,却使用其他人写的程序,或者利用现成的资料或工具,这样以来,我们的确可以避免做重复性的工作,但却永远学不会编程。
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