Wallers还说，国家运输安全局的调查员正在事故现场做进一步调查。

Investigators of the National Transportation Safety Board were at the accident scene, Wallers said.

youdao

Wallers还说，国家运输安全局的调查员正在事故现场做进一步调查。

Investigators of the National Transportation Safety Board were at the accident scene, Wallers said.

youdao