to separate or remove something from something else that it is connected to使分离,使分开;拆掉
You can detach the hood if you prefer the coat without it.大衣上的帽兜如果不想要可以拆掉。
Detach the lower part of the form from this letter and return it to the above address.请将表格的下半部分从信中裁下并寄到上述地址。