Among global warming's most frightening threats is the prediction is that the polar ice-caps will melt, raising sea level so much that coastal cities from New York to Los Angles to Shanghai will be flooded.
出自-2010年12月听力原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
角；角度
An angle is the difference in direction between two lines or surfaces. Angles are measured in degrees.