The aggregate cost of the for-profit college industry is great.
盈利性大学的总成本可是很大一笔。
The aggregate equipment maintenance cost could be (decreased) effectively by this system.
该系统的使用可有效降低设备总体维护成本。
The aggregate equipment maintenance cost could be (decreased) effectively by this system.
该系统的使用可有效降低设备总体维护成本。
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