This separation must not be just on a formal level.
分离不能只是在正式水平上。
Each object has a level where it can be found in the formal module.
每一个对象都拥有在规范模块中可以找到的层次。
Because our contract was all level-of-effort work, there was no formal warranty period per se.
因为我们的和约是包括系统的所有部分的工作，并没有一个正式的担保期限。
Because our contract was all level-of-effort work, there was no formal warranty period per se.
因为我们的和约是包括系统的所有部分的工作，并没有一个正式的担保期限。
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