expedition

/ˌɛkspəˈdɪʃən/

a military campaign designed to achieve a specific objective in a foreign country

中文释义：远征；探险

The scientific expedition to Antarctica studied climate change effects.

前往南极的科学远征研究了气候变化的影响。

The military expedition was launched to secure the border region.

这次军事远征旨在确保边境地区的安全。