If you are using an extension lead it must be rated at a minimum of 5 Amps and fully unwound.

如果有使用延长电线，电线的额定电流最小达到5 Amps并且电线需完全展开。

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The extension of astronomy from visible light to radio waves to x-rays and gamma rays never failed to lead to the discovery of unusual objects such as radio galaxies, quasars, and pulsars.

从可见光扩展到无线电波，再到 X 射线和伽马射线，天文学总是会发现不寻常的物体，如射电星系、类星体和脉冲星。

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Staff in one hospital reported many inadvertent disconnections with a new reusable extension cable that was supposed to connect the lead to the pacemaker.

某医院职工报道了很多应该连接导联和起搏器新的可重复使用的延长导线的意外断开。

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Carl Rosen of the University of Minnesota Extension notes that concerns about lead have increased now that more people are planting gardens.

VOA: special.2009.06.09

Residents living nearby had expressed fears the extension would lead to increased pollution and traffic problems.

BBC: Artist's impression of recycling centre

Okay, so that sounds like the start to a bad science fiction movie, but it could pave the way to understanding schizophrenia better and, by extension, lead for better treatments to schizophrenics.

FORBES: Scientists Create a Schizophrenic Computer

And that's what will happen if the House does not follow the Senate's lead and pass the extension of tax cuts for 98 percent of the American people.

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,