expedition

The scientific expedition to the bottom of the Mariana Trench discovered several unknown species of jellyfish.

(Chinese) 前往马里亚纳海沟底部的科学考察队发现了数种未知的母鱼物种。

Lewis and Clark led a famous expedition to explore the western territories of the United States in 1804.

(Chinese) 刘易斯和克拉克在1804年领导了一次著名的远征，去探索美国的西部领土。