reflection

      [c]

      映像；映照出的影像an image in a mirror, on a shiny surface, on water, etc.

      [u]

      （声、光、热等的）反射the action or process of sending back light, heat, sound, etc. from a surface

      [c]

      反映；显示；表达a sign that shows the state or nature of sth

      [u]

      沉思；深思；审慎的思考careful thought about sth, sometimes over a long period of time

      [c][usupl]

      （关于某课题的）思考，回忆your written or spoken thoughts about a particular subject or topic

      [c]

      记录；描述an account or a description of sth