【英语时差8,16】微波炉如何加热食物？

 “Let’s nuke it in the microwave,” we often say as we pull a frozen dinner out of the freezer. That figure of speech seems to express the fact that our experience with nuclear power and with microwaves goes back only a few years, while our experience with fire goes back thousands of years. We seem to be reacting to the novelty that nuclear power and microwave cooking have in common. They don’t really have anything else in common. Microwaves are electromagnetic waves, exactly the same as visible light except that microwaves have much longer wavelengths¹ than the light our eyes detect. The first large-scale use of microwaves was in radar² in the 1930’s. Now microwaves are also used to transmit telephone and television signals. Microwaves cook food by heating the liquid water it contains. Even frozen food contains some liquid water, at least on the outside surface exposed to warm air on the way from the freezer to the oven.

1 wavelengths   

n.波长( wavelength的名词复数 )；具有相同的/不同的思路；合拍；不合拍

参考例句：

• I find him difficult to talk to—we're on completely different wavelengths. 我没法和他谈话，因为我们俩完全不对路。 来自《简明英汉词典》
• Sunlight consists of different wavelengths of radiation. 阳光由几种不同波长的射线组成。 来自辞典例句

2 radar   

n.雷达，无线电探测器

参考例句：

• They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
• Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。