obliteration/əˌblɪt̬.əˈreɪ.ʃən/名词彻底毁掉,抹去,覆盖(使不留痕迹)The reef faces obliteration in the near future.在不久的将来,该珊瑚礁将面临毁灭的命运。想跟读,去练习