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为了总结经验，改正缺点，使我们的工作更向前推进一步，现就当前坑探工程上存在着的几个主要问题提些意见，供各地参考。
In order to sum up our experience and correct our shortcomings, we are going to take one step forward in our work. We will now give some suggestions on some of the major problems existing in the current pit exploration project for reference.