VOA慢速英语:Scientists Closer to Solving Plain of Jars Mystery

mortuary –adj. of or relating to burial or death

quarry – n. place where large amounts of stone are dug out of the ground

ethnicity –n. a particular race or group of people who have a culture different from the main culture of a country

disc –n. a flat, thin, round object

burial –n. the act or ceremony of burying a dead person in a grave.

significant –adj. very important

isotope –n. any one of different forms in which the atoms of a chemical element can occur