“exploitation cost”造句，怎麼用exploitation cost造句

The exploitation cost of oil sand has been getting lower, due to progress in technology.

The exploitation cost of producing software is very high, and its marginal benefit is increased by degrees.

As an important part of project Management of System Integration, software PM can reduce the exploitation cost of software project, and accelerate the exploitation plan of software project.

Now, chemicals are the capital therapeutics to cure malignancy, but the exploitation cost of chemicals is expensive, it has big adverse reaction and most of it have mutagenesis noxious property.