会話トレ Drill: 製造業 Manufacturing
ケガ防止, 怪我の予防
injury prevention
主な原因 (omona gen-in)、要因 (you-in)
contributing factor
a contributing factor
Issues contributing to this problem
この問題の原因
国家資格 (こっかしかく)
national qualification
a national qualification
get a qualification/certification

