The long-term usage may have certain untoward effect.

连续使用可产生一定的不良反应。

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Rather than buy a product outright, or sign a long-term service contract, sensors can track actual usage, enabling customers to pay only for what they consume or even the value they receive.

不同于一次性购买或签订长期服务合同，传感器可以跟踪实际使用情况，允许顾客根据自己的消费内容甚至得到的价值进行支付。

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To date, there have been no long-term studies on the effects of cell phone usage among children.

到目前为止，没有做过儿童中长期使用手机的研究。

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The M5 Pro also makes use of True Speed Technology to prevent the drastic performance drop seen in some SSDs after intense or long-term usage.

ENGADGET: Plextor M5 Pro bulges SSD envelope with 94K IOPS and 540MB/s

In recent months, the USGA has declared long-term environmental sustainability, particularly water usage, to be one of its top policy issues.

WSJ: Why a Ball Rollback Might Not Fly | Golf Journal by John Paul Newport

To date, there have been no long-term studies on the effects of cell phone usage among children.

CNN: WHO: Cell phone use can increase possible cancer risk