most restrictive signal

例句：

1. 1. The most restrictive laws in the country are aimed at protecting the environment.
   该国最严格的法律旨在保护环境。
2. 2.The most restrictive measures were taken to prevent the spread of the virus.
   为了阻止病毒传播，采取了最严格的措施。
3. 3. The most restrictive regulations have been implemented to ensure compliance with safety standards.
   实施了最严格的规定以确保遵守安全标准。