VOA慢速英语:科学家在澳大利亚西海岸发现了7000年前的工具

archeological –adj. related to archeology, the study of past human life

site –n. a place where something was in the past

aboriginal –adj. related to the native people of Australia

carvings –n.(pl.) objects that are cut from stone or wood

civilization –n. a condition in which people have developed effective ways to organize and live as a society

approach –n. a way of doing things

grind –v. to make something sharp by rubbing it against a hard surface

scan –v. to use a machine to make a digital image of something for study or reproduction

indigenous –adj. native to a particular area