1someone who is not a legalcitizen of the country they are living or working in 外侨,外国人
illegal aliens entering the country
非法入境的外国人
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Alien is used in official contexts. In everyday English, foreigner is used, but can sound disapproving or unfriendly. To avoid this, people often use the expression people from other countries instead: Alien用于正式语境。在日常英语中,用foreigner一词,但是这个词带有贬义色彩或显得不友好。为了避免这一点,人们常用短语people from other countries
In those days people from other countries rarely came to Japan.
那个时候,很少有外国人到日本来。
2.TTSin stories, a creature from another world 外星人[生物]
n(1979) a horrorfilmdirected by Ridley Scott about a creature that kills people, sometimes after first living in their bodies. There has been a series of Alien films, including Alien Resurrection (1997) and Aliens vs. Predator: Requiem (2007).