Beibu Gulf
/ˈbeɪbʊ/- an arm of the South China Sea, bounded by the coasts of southern China and northern Vietnam. An incident there in 1964 led to increased US military involvement in the area prior to the Vietnam War Former name T
ONKIN G ULF.北部湾（南海的一个海湾, 以中国南部与越南北部海岸线为界; 1964年的北部湾事件导致美军在越南战争爆发之前加大了对该地区的军事参与; 原称TONKIN GULF）。