1. 拘留;扣押
When people such as the police detain someone, they keep them in a place under their control.
detain
e.g. The act allows police to detain a suspect for up to 48 hours...
该法令允许警方将嫌疑犯扣押最多48小时。
e.g. He was arrested and detained for questioning.
他遭到逮捕、拘留以接受问讯。
2. 阻留;耽搁
To detain someone means to delay them, for example by talking to them.
e.g. Thank you. We won't detain you any further.
非常感谢。我们就不再耽搁您的时间了。