人类虽有多种不同的文化，但语言都是普遍地灵活和复杂，并且这种灵活性和复杂性又促使文化更加多样更加丰富。
Human language has a flexibility and complexity that seems to be universally Shared across cultures and, in turn, contributes to the variation and richness we find among human cultures.
这些规则使作用域能够在广泛的设计模式和应用程序中使用，但是这种灵活性的代价是增加了复杂性。
The rules enable scopes to be used in a wide range of design patterns and applications, but such flexibility comes at the cost of complexity.
美国仍然是世界上的军火商因为武器的复杂性和灵活性。
The us remains the world's arms merchant because of weapons complexity and flexibility.
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