This continental slope usually starts at a place somewhere near the 100-fathom mark and in the course of a few hundred miles reaches the true ocean-floor at 2,500-3,000 fathoms.

大陆架慢坡一般是从差不多100英寻水深的地方开始的，一直延伸到几百英里远深达2,500至3,500的地方，那里才是真正的海底。