In places like the Eastern seaboard of the U.S., a 1-ft. [30-cm] vertical rise in sea level means a 100-ft [30.5-m] retreat of shoreline.

• 在诸如美国东海岸，海平面每上升1英尺（30厘米）就意味着海岸线退后100英尺（30.；5米）。”