class one medical certificate造句

例句与造句

1. The pilot held a current airline transport pilot s licence ( helicopters and gyroplanes ) and a valid class one medical certificate . he had 3 , 900 hours of operating experience
   肇事直升机的飞行员具备有效的航空运输飞行员执照（直升机和自转旋翼机）和一级体检合格证明书，并拥有3 , 900小时的飞行经验。
2. It's difficult to find class one medical certificate in a sentence. 用class one medical certificate造句挺难的