本帖最后由 WARMHUT 于 2019-3-13 14:00 编辑 9 U3 i; V; X' o3 E5 Z$ a, e 8 k( a: R9 A4 J0 fCanada and the United States joined authorities around the world on Wednesday and grounded the Boeing Max 8 and Max 9 aircraft, days after the Ethiopian Airlines crash that killed 157.