unsubscribe的用法和樣例：
例句
用作動詞 (v.)
- If you would liketo opt out of receiving email, you may unsubscribe at any time.
如果您決定不接受此類郵件，可在任何時候退訂。 - End users are able to subscribe and unsubscribe to the published alerts made available to them.
終端用戶能夠訂閱他們可獲得的發布警示信息，並可取消訂閱。 - Problems that result from a failure to unsubscribe correctly can resemble a memory leak.
因未能正確取消訂閱而導致的問題類似於內存泄漏。
