图解

送交者: Jingyi 于 2006-07-26, 12:44:06:

回答: 三镜堂主的业余解说由 eng 于 2006-07-25, 14:09:52:

http://www.webster.com/mw/art/mowrench.htm

m-w.com:
monkey wrench
2 : something that disrupts <threw a monkey wrench into the peace negotiations>