只有实力最雄厚的银行才能进入批发市场而且成本很高。
Only the strongest banks have access to wholesale markets, and at high cost.
挑战在于,在技术和企业两个层面让一切实现无缝融合是很复杂的,而且成本很高。
The challenge here is in the complexity and cost of integrating all this in a seamless way, both on the technological as well as corporate side.
但是在测试开发时期修正一个薄弱且错误的用例十分困难而且成本很高,尤其是当使用一个基于瀑式开发方法的时候。
But correcting a weak or erroneous use case at test development time can be difficult and costly, especially when using a waterfall-based development method.
It was very very expensive.
而且成本很高。
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