来尝试一种别样的通讯体验吧。Signal 不仅提供各种常见的功能，还尤为注重隐私安全。 While Signal has a very common interface, it is very various underneath the hood. Your conversations in Signal are finish-to-close encrypted, which implies that not even the homeowners of Signal can check them. Just the men and women inside the conversation can see them. Signal's conditions of services https://www-signal.com/