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

货币的作用体现在它是经济运行的润滑剂。

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

随着工业化的发展，许多工厂都使用需要润滑的。

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

有润滑剂——唾液水的形式——刷牙的人的动力等等。

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

你的关节可能会随着年龄的增长而开始受伤的原因有很多，所以你实际上可能会失去关节之间的一些润滑。

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，在手臂鲜血的润滑下，在费德-劳塔的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的问题方面的重要性。摩擦学是研究摩擦、磨损润滑的学科。