The Alt keys on a keyboard; modifier keys that change other key functions.

键盘上的 Alt 键；用于改变其他按键功能的修饰键。

Alternate user accounts used alongside a main account, especially online.

与主账号并用的替代账号，常见于网络平台。

Alternative cryptocurrencies other than Bitcoin; crypto assets beyond the main coin.

除比特币外的替代型加密货币；主流币之外的加密资产。