investigations
n. 调查（investigation 的复数）
例句
Investigations have never turned up any evidence.
调查从未发现过任何证据。
《柯林斯英汉双解大词典》
The board of inquiry is continuing its investigations.
调查委员会在继续做调查。
《牛津词典》
The police tell me they've finished their investigations out there.
警方告诉我他们已经完成了在那边的调查。
