Complex sentence: Built-in Android compatibility layer of Alien Dalvik allows the usage of software in an emulated Android environment on a Jolla Tablet, without changes to the software nor performance slow-down, as Sailfish OS and Android both use the Linux kernel.
Split into simpler sentences: Built-in Android compatibility layer of Alien Dalvik allows the usage of Android software in an emulated Android environment. This is possible without a slow-down in performance, as Sailfish OS and Android both use the Linux kernel.