handling hole

例句：

1. 1. The engineer carefully measured thesize of the handling hole before drillingit.
   工程师仔细测量了处理孔的大小，然后钻孔。
2. 2. The construction crew had to excavate a large handling hole to accessthe underground pipeline.
   施工队不得不挖掘一个大的处理孔来接触地下管道。
3. 3. The machine's design includes a special handling hole foreasy cleaning and maintenance.
   机器的设计包括一个特殊的处理孔，便于清洗和维护。