Nevertheless we have learned from experience that it is dangerous to place too much reliance on the inferences to be drawn from projecting conditions onshore in to essentially unknown offshore areas, for in many cases a fundamental change in structural and stratigraphic conditions occurs at coastlines.

Such indications as are provided by conditions on land are not , however, encouraging.

직장상사가 시킨건데....해석이안되서...ㅠㅠㅠ