infiltrator
noun /ˈɪnfɪltreɪtə(r)/
/ˈɪnfɪltreɪtər/
- a person who secretly becomes a member of a group or goes to a place, to get information or to influence the group
潜入者;渗入者 - 32 people were interned as suspected infiltrators.
32人因涉嫌渗透而被拘留。
- 32 people were interned as suspected infiltrators.