The value of money really is the oil or the lubrication of the economy.

货币作用体现在它是经润滑剂。

With industrialization, you have lots of factories using machinery that needs lubrication.

随着工业化发展，许多工厂都使用需要润滑机械。

There are various reasons why your joints might start hurting with age, so you can actually lose some of the lubrication between joints.

你关节可能会随着年龄增长而开始受伤原因有很多，所以你实际上可能会失去关节之间一些润滑。

There's lubrication -- the form of saliva and water -- the dynamics of the person doing the brushing and more.

有润滑剂——水形式——刷牙人动力等等。

Paul twisted his left hand free, aided by the lubrication of blood from his arm, thrust once hard up underneath Feyd-Rautha's jaw.

保罗松开了左手，在手臂鲜血润滑下，在费德-劳塔下巴下面用力地了一下。

And I think you'll be surprised at how significant a little bit of tribology can be in alleviating some very large problems. Tribology is the study of friction, wear and lubrication.

而且我认为您会惊讶于摩擦学在缓解一些非常大问题方面重要性。摩擦学是研究摩擦、磨损润滑学科。