Begin with europe , the weakest cog in the global engine .
先说欧洲--全球经济引擎中最薄弱的那个齿轮。
The wheel engages with the cog and turns it .
轮子咬住轮齿并带动它转动。
Every subject is a british civil servant , a cog in the vast governmental bureaucracy .
每个研究对象都是英国的公务员，巨大政府机器的一颗螺丝钉。
Although john thinks he has an important job , he is really only a cog .
尽管约翰认为他身负重任，但他实在只是一名小卒。
The red metal is a crucial cog in the global economy as its use in electronics and construction means it is found in almost every appliance and building .
