缓冲器需要吸收测试不严格的预期损失。
It is the buffer needed to absorb the projected losses where the tests are lax.
他们放弃大型长期交易，而喜欢更小不严格的交易。
They are dumping huge long-term deals in favour of smaller, less rigid ones.
在这种情况下，说两个文档“相同”或者“相等”实际上是不严格的。
In such cases, it's really inaccurate to say that the documents are "the same", or that they are "equal."
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