alien
adjective uk/ˈeɪ.li.ən/ us/ˈeɪ.li.ən/
[ before noun ]外星人（或生物）的
relating to creatures from another planet
an alien spacecraft 外星人飞船
Synonym: extraterrestrial
怪异的；截然不同的；不熟悉的
strange and not familiar
When I first went to New York, it all felt very alien to me. 我初到纽约的时候，觉得一切都非常陌生。
外国的;异域的;异族的
coming from a different country, race, or group
an alien culture 异域文化
Synonym: foreign
alien
noun [ C ] uk/ˈeɪ.li.ən/ us/ˈeɪ.li.ən/
外星人（或生物）
a creature from a different planet
He believes that aliens visit Earth in UFOs.
In this story, the spaceship comes into contact with a society of friendly aliens.
law specialized（通常指不是所在国公民的）外国人，外侨，侨民
someone who lives in a country of which they are not a legal citizen
When war broke out, the government rounded up thousands of aliens and put them in temporary camps. 战争爆发时，政府把数以千计的外国人集中在一起，关在临时拘留营中。