成本不变产业的英文：
constant cost industry

• Matter is in constant motion and constant change.
  物质总是在不断运动，不断变化的。
• A constant guest is never welcome
  常客令人厌
• The market is in a constant state of flux.
  市场行情在不断变化。

• Cost was no consideration.
  费用无关紧要。
• The cost will be astronomical.
  费用将是一笔天文数字。
• These costs are charged to an asset account entitled organization costs.
  这些成本被计入一个名为开办费的资产账户。

• primary industry,secondary industry,tertiary industry
  第一产业、第二产业、第三产业
• learned industriousness
  习得勤奋性
• Industrial research is the province of the Department of Trade and Industry.
  工业研究属贸易和工业部的职责范围。