security guard

guard who wears a uniform and provides protection, eg in a public building or when money is being moved between banks 保安人员; 护卫员.

secretion, secretive, secretively, secretiveness, secretly, sect, sectarian, sectarianism, section, sectional, sectionalism, sector, secular, secularism, secularist, secularize, secularise, secure, securely, securities, security, security risk, sedan, sedate, sedately, sedateness, sedation, sedative, sedentary, sedge, sedgy, sediment, sediment-covered, sedimentary, sedimentation, sedition, seditious, seditiously, seduce, seducer, seduction,