subcontinent
noun [ C ] uk/ˌsʌbˈkɒn.tɪ.nənt/ us/ˈsʌbˌkɑːn.ən.ənt/
次大陆;（常指）南亚次大陆
a large area of land that is part of a continent, often referring to South Asia
the Indian subcontinent 印度次大陆
He has written a book about the history of railways in the subcontinent. 他写了本有关次大陆铁路发展史的书。