学员: student, member of an institution of learning, officer cadet...
返回: to return to, to come (or go) back...
招聘: to invite applications for a job, to recruit...
燃油: fuel oil...
从: lax, yielding, unhurried, from, obey, observe, follow, second cousin...
远方: far away, a distant location...
高级: high level, high grade, advanced, high-ranking...
霜: frost, white powder or cream spread over a surface, frosting, (skin) cream...
走近: to approach, to draw near to...
兢兢业业: (idiom) conscientious, assiduous...