1.A Coast Guard investigatory panel has listened to four days of testimony.

海岸警卫队调查小组听取了四天的证词。

2.And that infrastructure then becomes the basis of what leads to the consolidation of this kind of investigatory power on a federal level.

然后，这种基础设施成为导致联邦层面固这种调查权力的基础。机翻

3.A paid passenger on an expedition to the Titanic with the company that owned the Titan submersible testified before a U.S. Coast Guard investigatory panel Friday that the mission he took part in was aborted due to an apparent mechanical failure.

一名随泰坦号潜水器所属公司前往泰坦尼克号探险的付费乘客周五海岸警卫队调查小组面前作证说，他参加的任务因明显的机械故障而中止。