The format is the same. I'm going to ask for some input, and then I am going to use that procedure to check, is this the right type of value. And I'm trying to use that to do the coercion if you like. Same thing if it works, I'm going to skip that, if it not, it's going to throw the exception.

格式是一样的，我需要一些输入,然后我要用一个过程来检查,是否是正确的值,然后你就可以做强制转换了,如果能运行，那是一样的，我打算跳过这段，如果不正确，那就会抛出一个异常。

麻省理工公开课 - 计算机科学及编程导论课程节选

To require him to pay, let's say, a third of his earnings to the government to support good causes like food and health care and housing and education for the poor, that's coercion, that's unjust.

假设，让他拿出三分之一的收入,交给政府来支持公益事业,为穷人提供食物，医疗保障，住房和教育，这就是强迫，是不公平的。

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