用复杂的方式组合函数，是函数性语言生产力的关键，这是因为这可不断提高抽象的层次。
Composing functions in complex ways is the key to productivity in functional languages because you're continually raising your level of abstraction.
用复杂的方式组合函数，是函数性语言生产力的关键，这是因为这可不断提高抽象的层次。
Composing functions in complex ways is the key to productivity in functional languages because you're continually raising your level of abstraction.
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