Practice has proves that it is feasible to infer the re-dig-ging condition and time on the method.

实践证明，以此推断重新开挖条件和时间是可行的。

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Practice has proves that it is feasible to infer the re-dig-ging condition and time on the method.

实践证明，以此推断重新开挖条件和时间是可行的。

youdao