经济学人下载:航空安全 是否禁用电子设备?(上)

例句:Many of the radio and electronic devices used are similar to those of artificial satellites.
所用的无线电和电子仪器中有许多与人造卫星的相同。

2.brought down 降低；击落

例句:They have brought down income taxes.
他们降低了所得税。

3.cargo plane 货运飞机

例句:Experts arrived to examine the wreckage of a cargo plane.
专家们到达那里检查运输机的残骸。

4.terrorist threat 恐怖威胁

例句:Security was tight because of the new terrorist threat.
因为新的恐怖威胁，安全形势比较紧张。