Hold the unit steady during measuring. Mark the area and distance from the appliance when the red LED is on. Read below for suggested corrective measures.

测量时将该设备放稳，当红色的LED亮时，量一下其距离，按照下面指示的读数校正测量。

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A single red LED shows that the power is switched on.

单支红色发光二极管表示电源已接通。

《牛津词典》

What led one ichthyosaur to bite another on the snout is unknown.

是什么驱使一只鱼龙咬另一个鱼龙的鼻口部仍未可知。

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She said with help from the Brazilian-led U.N.stabilization force, Haiti is also making strides on domestic security, and tackling corruption and the drug trade.

VOA: standard.2009.04.14

"One of the things that this study actually allows us to do, is to begin to get a sense as to how much of the burden of infection is an added burden on a patient who is already at risk of dying because of the underlying diseases that led them to be in the intensive care unit,"

VOA: standard.2009.12.08

As ever, a camp led by France and Germany on one side is pitted against one led by Britain on the other.

ECONOMIST: Arguments over majority voting in the European Union

Veep stars Julia Louie Dreyfus as the caustically narcissistic Vice President Selina Myer and Girls is led on- and off-camera by phenom Lena Dunham.

FORBES: The New Girls Of Television: How Women Could Rule The Primetime Emmys

An IBM-led group is working on a new collector dish that could avoid that damage while taking a big step forward in solar power efficiency.

ENGADGET