keep-out area

例句：

1. 1. The security guards keep a close watch on the keep-out area to prevent any trespassers.
   保安人员密切监视禁区，以防止任何闯入者。
2. 2. The research team set up a keep-out area in the lab to protect the samples from contamination.
   研究小组在实验室里设立了一个禁区，以保护样本不受污染。
3. 3. The firefighters had to clear a keep-out area around the building to allow access for emergencyvehicles.
   消防员必须清理出一条通往建筑物的禁区，以便紧急车辆能够通行。