invader
noun [ C ] uk/ɪnˈveɪ.dər/ us/ɪnˈveɪ.dɚ/
入侵者，侵略者
an army or country that uses force to enter and take control of another country
The foreign invaders were finally defeated by allied forces. 外国侵略者最终被联军击败了。
figurative Any new company is seen as an invader in an already competitive market. 在竞争已经很激烈的市场中，凡是新公司都被看作是入侵者。