Three men were arrested and one was underguard in a hospital.
有三人被捕，一人在医院里受到监视。
《柯林斯英汉双解大词典》
2
Police shot and wounded the two suspects and they are underguard in a hospital.
警方开枪打伤两名嫌疑人，他们目前被看守在医院里。
3
Any application that the policy allows access to can access the files that are underguard points as long as the application USES system libraries to access the files.