A spanner is a metal tool whose end fits round a nut so that you can turn it to loosen or tighten it.
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.
例句
A bad result is sure to throw a spanner in the works.糟糕的成绩肯定会坏事的。
英汉词典释义
n.
扳手, 扳钳
Take your spanner, and tighten the nut.把你的扳手拿来, 把螺帽拧紧。
破坏计划；阻挠进程；从中捣乱
Let’s get this finished before the boss comes along and throws a spanner in the works.我们把这个弄完吧，别等老板来了从中作梗。
英英词典释义
Noun
1. a hand tool that is used to hold or twist a nut or bolt