趣味青春英语电台 第226期:prim and proper(在线收听

   Idiom:

  prim and proper (appropriate )
  Hit the book:
  Edge
  Entrapment
  Shut-off button
  Secure
  Unaware of
  Be prone to
  Mitten
  Shoelace
  Drawstring
  Complex
  Avoid the Steps' Edges
  You should avoid the edges of an escalator's steps when riding one as possible entrapment may occur. Every escalator is designed to show the edge where you may be entrapped. The yellow lines in the sides of the escalator steps show the place where you should put your feet to avoid any entrapments.
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