VOA慢速英语2012.03.23
[audio]http://sound.yywz123.com/tingbbs/voa/voa20120323.mp3[/audio]If you ever tried to walk on a fallen tree log, you understand what the expression means. It is easier to fall off the log than to stay on it. 如果你曾试着在平放的原木上行走，你就知道这个成语的意思。从原木上落下当然比呆在上面要容易。__________________________________________________________.
**** Hidden Message ***** the expression is offen used today.
for example ,you might hear a student say to her friend
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