working clearance

例句：

1. 1. The company needs to obtain a working clearance from the government before they can start their new project.
   该公司在开始新项目之前需要从政府获得工作许可。
2. 2.The worker was granted a working clearance after completing his training program.
   这名工人在完成培训项目后获得了工作许可。
3. 3. The construction site requires a working clearance to ensure safety and prevent accidents.
   施工现场需要工作许可以确保安全并防止事故。