echo

The sound of an engine echoed back from the thick forest..从茂密的森林里传来引擎的回声。

He could hear eerie noises echoing through the corridors..他听见恐怖的声响在走廊里回荡。

radar echo,雷达回波

echo cancellation,回波消除

ultrasonic echo,超声回波；超声回声

echo sounder,回声测深器

flaw echo,缺陷回波；缺陷的回波信号；缺陷回声

echo effect,回声效应；回音效果

echo wall,回音壁

echo chamber,回音室

真题例句...there is an echo from the 1930s...第二套CET62013.6阅读理解