foot sol·dier
noun/ˈfʊt səʊldʒə(r)/
/ˈfʊt səʊldʒər/
- a soldier who fights on foot, not on a horse or in a vehicle
步兵 - a person in an organization who does work that is important but boring, and who has no power or responsibility
（组织中从事乏味工作而不担责任，但又不可或缺的）群众员工