They send out radio waves that reflect off raindrops, airplanes, bats, and so forth.

他们发射那些可以反射雨滴、飞机、蝙蝠以及其他东西的无线电波。

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Basically, the phenomenon of Standing Waves occurs when sound waves of the same frequency reflect off the walls and meet from opposite directions.

基本上，当相同频率的声波从墙壁上反射并从相反方向相遇，就会出现驻波现象。

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The sun's rays can reflect off of sand and water (snow, too).

因为沙子和海水可以反射太阳光(雪也可以)。

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Those waves reflect off the body to transmit a three-dimensional image of the passenger that looks like a fuzzy photo negative.

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This air gap allows light to come through the touch sensor and reflect off the LCD, which causes added glare for the user.

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The IR light does, however, reflect off of any objects or people in the room, and the information carried by this reflected light is recorded by a holographic imager.

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