clean procedure

例句：

1. 1. The hospital has implemented a new cleanprocedure to reduce the spread of infections.
   医院实施了一种新的清洁程序，以减少感染的传播。
2. 2. The engineerdeveloped a clean procedure for removingrust from metal surfaces.
   工程师开发了一种清洁程序，用于从金属表面去除锈迹。
3. 3. The company has adopted a clean procedureto improve its environmental sustainability.
   该公司采用了一种清洁程序，以提高其环境可持续性。