与传统教学方法相比，CAI有无与伦比的优点，它既有利于提高教学质量，又可降低成本，扩大教学覆盖面。
Compared with traditional instruction methods, CAI has many unparalleled advantages. It not only helps improve the quality of instruction, but also cuts costs and expands coverage.
该陶粒的生产，既利用了铁矿山及选矿厂的废弃物，保护了环境，又可降低成本，具有极大的经济效益和社会效益。
The manufacture of the porcelain granules both USES the waste of the iron ore mine and the ore dressing plant, protects environment, reduces the cost and has huge economic benefit and social benefit.
我确实认为既可以提高客户满意度，又可以降低成本。
I really believe that it is possible to both improve customer satisfaction and reduce costs.
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