幸存者回忆老挝大坝坍塌的恐怖

roof – n. the top of a building

pole – n. a long, straight piece of wood, metal, etc., that is often placed in the ground so that it stands straight up

hydropower – n. electricity produced from machines that are run by moving water

evacuation – n. to remove people from a dangerous place

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

construction – n. the act of building something

evening – n. early nighttime

battery – n. a device that is placed inside a machine (such as a clock, toy, or car) to supply it with electricity