blanking clearance

例句：

1. 1. The engineer useda special tool to blanking clearance theold oil stains on the floor.
   工程师使用一种特殊工具清除地板上的旧油渍。
2. 2. After the meeting, the team leadercleared the blanking clearance and started workingon the project.
   会议结束后，团队负责人清除了白板并开始着手项目。
3. 3. During theholiday, the office staffhad to clear the blankingclearance before resuming work.
   假期期间，办公室员工在重新上班前必须清除白板。