Petroleum

hydrocarbon    hydrocarbon radical 烃基 

decomposition     gaseous a.气态的，过热的     complexity n.复杂状态，复杂的事物     molecule  molecular   重音不一样 发音的变化    deposite=saving   放下、储蓄、矿藏  rich deposits

current deposite   活期存款    deposit the sand here

she deposited her money in the bank

embrace vt, 包含 包围 include

This book embraces many subjects

We allowed the warm water to embrace us

solution n .溶液 解决 解答

 bitumen 沥青 native ~ 天然沥青  asphalt n.沥青，柏油   asphalt-track 沥青跑道  pitch n.沥青（非正式）nitrate 硝酸 wax 石蜡

retrieve V.开采，重新得到  to ~ the lost bag    

manufacture v 生产 制造

preeminently ad.卓越地，极度  preeminent

He has done the job prerminently

  bring about   industrialization 实现工业化

    propel V.推动  propelled propelling a person propelled by ambition

diminish .消失

versatility （多面性、变化性）<-versatile(多才多艺的）

lubricant n.润滑剂a.润滑的   

  feedstock n.原料  

reliant a.依赖的，依靠的（on)  reliant on medication

 check inflation 控制通货膨胀

recession n衰退

During the economic recession ,he lost a lot of money

 buoyant a. 状态良好的，有浮力的  in a buoyant mood   buoyant steps

depend on      be  dependent on   independent

She is completely dependent on her danghter for money

be restricted to 限制于，局限于

to restrict oneself to two cigarettes a day

as such 本身，照此

There is nothing as such

gas-cap 气顶

by far  到目前为止

 energy spectrum 能谱

 national revenue 国民收入，税收 

  The country will make the budget according to the national revenue

provide..with ....给。。。提供

The provide us with food

  balance of payment 收支平衡

in a sense 在某种意义上 

In a  senes success means happiness

  in terms of   ....根据 按照。。。（表达）

His life is a successful in terms of happiness

a position 处境 petroleum products 石油产品  The origin of ... lies in ...

at various depths 在各个程度  accumulations of ... 的堆积物  remains

act according to circumstances 随机应变  present 存在于某物内HM=how many

in its widest/narrower sense      crude oil 原油   known as人们所知的