2/💡 App chains act like sidechains that are attached to mainchains.
They can have their own consensus mechanism, process only their own transactions, and have maximum flexibility in choosing the right degree of speed vs. security for each particular use case.
2/💡 应用程序链的作用类似于连接到主链的侧链。
他们可以有自己的共识机制，只处理自己的事务，并且在为每个特定用例选择正确的速度与安全程度方面具有最大的灵活性。