cupola cleaning door

例句：

1. 1. The maintenance crew uses a special tool to clean the cupola cleaning door regularly.
   维护团队使用一种特殊的工具定期清洁电梯井门。
2. 2. The engineers were instructed to inspect the cupola cleaning door before the next shift change.
   工程师被指示在班次更换前检查电梯井门。
3. 3. The safety protocol requires that the cupola cleaning door be closed and secured before any personnel enter the shaft.
   安全协议要求任何人员进入井筒之前必须关闭并锁定电梯井门。