island arcˈailəndɑ:k短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 弧形列岛 Based on the late Paleozoic fold basement, Simao Triassic sedimentary basin formed in the early continental island arc collision stage after the close of Paleo Tethys ocean. 三叠纪沉积盆地建立在晚古生代褶皱基底之上，形成于古特提斯洋闭合后，造山早期的弧陆碰撞阶段。 cnki