The front cog has 44 teeth.前齿轮有 44 个齿。cog a die用骗人手段掷骰子The wheel engages with the cog and turns it.轮子咬住轮齿并带动它转动。One cog - wheel engages with another.一齿轮与另一齿轮啮合.Mr Lake was an important cog in the Republican campaign mach...
You're too old to go gallivanting around Europe.你年纪太大，不能到欧洲各地游逛去了。A girl's place is in the home, not gallivanting around and filling her head with nonsense.女孩子就该在家呆着，不能四处闲逛，成天胡思乱想。Oh , stop all this gallivantin...
There he stood: hair in wild tangles, dark stubble shadowing his chin.他站在那儿，头发乱成一团，下巴上一片黑胡茬。I noticed a police car shadowing us.我注意到一辆警车尾随着我们。Why does it take so long when it's not even shadowing or bugging?为什么他总是阴魂...
铜是热和电的良导体.Copper is a good medium for the conduction of heat and electricity.木头是热和电的不良导体.Wood is a poor conductor of heat and electricity.铜是电的良导体.Copper conducts electricity well....