-  扳手;扳钳
 A spanner is a metal tool whose end fits round a nut so that you can turn it to loosen or tighten it.
 
in AM, usually use 美国英语通常用 wrench, monkey wrench
										- PHRASE 从中捣乱;横加阻拦;搅局
 If someone throws a spanner in the works, they prevent something happening smoothly in the way that it was planned, by causing a problem or difficulty.- A bad result is sure to throw a spanner in the works.
 糟糕的成绩肯定会坏事的。
 
in AM, use 美国英语用 throw a wrench, throw a monkey wrench