Southern politicians who have tried to rise above the passionate rhetoric surrounding the civil war have frequently found themselves dragged back into the mire.
南方的政客试图把关于内战的这些激怒言辞进一步提升,却发现自己屡陷困境。
War(warm?)air is frequently lighter as the molecules bump around, excited by the heat.
暖空气经常更轻一些,因为分子受到热量的激励而四处碰撞。
Since the beginning of the Cold War, international security crises have occurred frequently.
自冷战爆发以来,国际安全危机频频发生。
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