English Study-That Old-time Sound, Captured Live in the Moment

scratchy-rough and unpleasant to the touch
              making a rough, unpleasant sound like something being scratched across a surface
distant-far away in space or time
assume- to think or accept that something is true but without having proof of it
relic- an object,  a tradition, a system etc. that has survived from the past
Presto recorder- a machine that captures sound by etching it directly onto a 78 RPM acetate disc
antique-old and often valuable

English Study-Burning natural gas is better than using coal

awkward-尷尬 making you feel embarrassed
drill- a tool or a machine with a pointed end for making holes
boom- a sudden increase in trade and economic activity; a period of wealth and success
promote- to help something to happen or develop
              to help sell a product, service, etc.
              to move somebody to higher rank or more senior job
potent-having a strong effect on your body and mind
          powerful
contributor- a person who writes articles for a magazine or a book, or who talks on a radio or television program or at meeting
                  a person or thing that provides money to help pay for something, or support something
facilities- building, services, equipment, etc. that are provided for a particular purpose
estimate-a judgement that you make without having the exact details or figures about size, amount, cost, etc. of something
methane- a gas without color or smell, that burns easily and is used as fuel. Natural gas consists mainly of methane
atmosphere-the mixture of gases that surrounds the earth