subduction zone
noun [ C ] geology specialized uk/sʌbˈdʌkʃən ˌzəʊn/ us/sʌbˈdʌkʃən ˌzoʊn/
（地球大陆板块之间的）俯冲带，潜没带
an area where two continental plates (= large layers of rock that form the earth's surface) meet and where there are often earthquakes