“彻底调查”
用英语怎么说？

The Nigerian Air Force plays an essential role in military operations, assisting in campaigns to combat armed groups and restore regional security. However, this tragedy highlights ongoing safety concerns, following several past crashes in recent years. In May 2021, the nation's army chief died alongside ten officers in a crash caused by severe weather, just months after another military plane crashed near the capital. President Tinubu has therefore ordered a thorough investigation into the incident to prevent similar incidents in the future.

尼日利亚空军在军事行动中发挥着至关重要的作用，协助开展打击武装团伙和恢复地区安全的行动。然而，在近年来发生几起坠机事件之后，这场悲剧凸显了持续存在的安全隐忧。2021年5月，该国陆军参谋长与十名军官在恶劣天气导致的坠机事件中丧生，而就在几个月前，另一架军用飞机在首都附近坠毁。因此，蒂努布总统已下令对此事件进行彻底调查，以在未来防止类似事件发生。