对礼貌行为的友好点头或挥手感谢有助于创造带有善意的宽容氛围，这在现代交通条件下是非常必要的。
A friendly nod or a wave of acknowledgement in response to an act of courtesy helps to create an atmosphere of goodwill and tolerance so necessary in modern traffic conditions.
作为礼貌行为的典范，他已经克服了内心的狂怒情绪。
许多西方国家的人担心礼貌行为正在减少。
Many people in western countries are worried that good manners are in decline.
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