简单地说，公司总是受到两种约束之一的制约。
Simply, companies are always constrained from such growth by one of two constraints.
只有获得信贷担保的银行才不受这些限制约束。
Banks that only tap credit guarantees are exempt from the restrictions.
这种依赖关系和语言元素限制约束了COBOL程序。
These dependencies and language element restrictions impose limitations on COBOL programs.
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