口边

• It suggests duality , as in rights and wrongs , warm hearts cold hands , sense and sensibility , and the traditional and the modern . phrases like these are in the very fabric of our everyday language , and often offer simplistic polarity that defies rational judgment
  例如老生常谈的是非黑白、人情冷暖、理性与感性、传统与现代，俯拾皆是，我们往往在日常生活中都会挂在口边而不自觉，甚至将我们判断事物的能力简单两极化。