VOA慢速英语:印尼地震后新的预警系统或能拯救生命

tsunami– n. a very high, large wave in the ocean that is usually caused by an earthquake under the sea and that can cause great destruction when it reaches land

sensor– n.a device that detects or senses heat, light, sound, motion, etc.

fiber-optic cable – n.a wire made of glass than can carry information very quickly

prototype– n. an original or first model of something from which other forms are copied or developed

buoy– n.an object that floats on water in a lake, bay, river, etc., to show areas that are safe or dangerous for boats

seismograph– n.an object that floats on water in a lake, bay, river, etc., to show areas that are safe or dangerous for boats

sirens –n. a piece of equipment that produces a loud, high-pitched warning sound