a senatorial investigation

• 参议院的调查

a senatorial investigation的用法和样例：

例句

1. The Senate chamber has a gallery for guests.
   参议院的会议厅设有听众席。
2. What we have now is so out of kilter that senatorial candidates can barely tend to their duties a year before the first primary.
   我们现在的选举制度完全处于失衡状态，来自参议院的候选人居然在预选之前一年就不能去履行自己作为参议员的职责了。