C1 adjective + noun ˌpaɪəˈnɪərɪŋ ˈmɪʃən
pioneering mission
开创性任务
Meaning
A groundbreaking or innovative undertaking that leads the way in a particular field.
Example
Artemis is a pioneering mission in space exploration.
阿耳忒弥斯是一次开创性的太空探索任务。