只有技术革新过的低成本航空公司利润还过得去。

Only those innovative low-cost carriers make decent money.

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只有M2M（机器对机器通信技术）和无线传感通信的通用标准和通信协议建立起来,成本问题才能解决.

Until common standards and protocols emerge for machine-to-machine and wireless sensor communications, costs will be a problem.

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本文通过对自镇流荧光灯的技术经济分析，提出只有保证产品，质量的前提下尽可能降低成本，才能达到既节电又省钱，提高能源利用率。

This paper analyses technic feature and economy for self-ballasting fluorescent lamp and points out that reducing products cost can save energy consumption and raise utilization of energy source.

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