求翻译：如果超挖，应采用施工图纸中要求的回填材料进行回填，并且压实到指定的密实度。因超挖而增加的费用，应由承包人自理。是什么意思？

Overbreak, the backfill material required in the construction drawings should be used for backfill and compaction to specified density. Increased costs due to over-excavation, should the contractor take care of themselves.

If the timeout should be used, and construction drawings in the backfill material for backfill and compaction, and to a given density. He dug for the increased costs to be borne by contractor at their own expense.

If ultra digs, should use the backfill material which in the construction blueprint requests to carry on the backfill, and the compaction to compactness which assigns.Because ultra digs the expense which increases, should take care of oneself by the contractor.

If the Super dug, should be used to backfill request backfill material in construction drawings, and density of compacted to specified. Increase in costs due to drilling, contractors should take care.

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