The input value can be a simple expression or be a value computed by another node.

该输入值可以是一个简单表达式，或者是由另一节点计算的一个值。

youdao

We need to specify which function should be used to generate the index entries from the given input value.

我们需要指定应该使用哪个函数来根据给定的输入值生成索引条目。

youdao

You have to clear the variable, otherwise the variable is filled with the last input value and further selections will be invalid.

必须清空这个变量，否则这个变量仍然包含上一次的输入值，进一步的选择就是无效的。

youdao

I'm much better having an exception get handled at the time of input than to let that prop -- that value rather propagate through a whole bunch of code until eventually it hits an error 17 calls later, and you have no clue where it came from.

不是我期望的格式,这时我最好有一个异常处理,而不是让其传下去,这个值传到代码的整个分支,最终会导致一个错误17调用的发生，并且你不知道这个错误是哪里来的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Only by actively soliciting input from wide-ranging sources can we develop alternative solutions that have higher value.

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