拖地大网

例句：

1. 1. We need to clean the floor before we start working on it.
   我们需要在开始工作之前先清理地板。
2. 2. The big net was used to catch fish in the river.
   这个大网被用来在河里捕鱼。
3. 3.The old man used to have a big net to catch fish and shrimp.
   这位老人过去有一个大网来捕捉鱼和虾。