日期：
来源：雅诚德英语网
Did you know that one company is making external airbags for helicopters and rotorcraft?
你可知道，一个公司对外气袋直升机和旋翼？
Did you know that one company is making external airbags for helicopters and rotorcraft?
你可知道，一个公司对外气袋直升机和旋翼？