The optical fiber sensor is a kind of device which can monitor change of external environment by testing the characteristics of light. It is based on light transmission in fiber.

光纤传感器是根据光纤的传输原理，通过对光纤传光特性的检测来感测外部环境变化的一种装置。

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Had we tried to fundamentally change how it departments monitor server rooms, I'm sure we would have failed.

我们曾试图根本性地改变IT部门监测服务器室，但是我确定我们失败了。

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But researchers now realize that paying attention to what was previously considered noise can help monitor global climate change.

但研究者们现在意识到研究这些“杂音”能够监测出全球气候的变化。

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We simply don't have historical records to monitor change on a broad scale.

BBC: Google adds coral reef panoramas to Street View maps

In the face of these accelerating physical, biological and social transformations, there is a need to monitor change, assess impacts and mobilize responses so as to adequately inform adaptation policies and practice.

UNESCO: Global Change in the Arctic and Co-production of Knowledge

He stressed that the investigation is continuing and the bus monitor could change her mind.

CNN: STORY HIGHLIGHTS