1.  trial trip
2.  trial voyage
3.  shake-down cruise

• 1. 试航: sea trial | trial trip | Trials | TRIAL VOYAGE
• 2. 海上试航: sea trials | sea trail
• 3. 正式试航: official trial | official sea trial | official speed trial

更多释义

• 1.试航已经开始，一些机场的部分航班已经恢复。
  Test flights have taken place, and some airports have now partially reopened.
  dict.yoduao.com
• 2.在海上试航三天后，我就确信双层船身理论是错误的。
  Three days at sea convinced me the double-hull theory was wrong.
  dict.yoduao.com
• 3.登陆：两栖大巴刚刚进行了一次成功的试航，它正缓缓地驶出克莱德河。
  Land ahoy: the amphibious bus emerges from the River Clyde after a successful test run.
  dict.yoduao.com

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