In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

[Q]: AirPlay was made available , which allows screen mirroring through an Apple TV or other supported external device allows the screen of the iPod Touch to be mirrored , and was the first generation of the iPod Touch to support it .
[A]: A feature called AirPlay was available , meaning that you can put the iPod Touch 's screen on an Apple TV or other device .


[Q]: A mercury-arc valve or mercury-vapor rectifier or ( UK ) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current ( AC ) into direct current ( DC ) .
[A]: A Mercury-arc rectifier is a type of rectifier used for converting alternating current ( AC ) to direct current ( DC ) .


[Q]: The Alexander ALX400 ( later known as the TransBus ALX400 and the Alexander Dennis ALX400 ) is a 2-axle double-decker bus body built by Walter Alexander Coachbuilders ( later by TransBus International / Alexander Dennis ) .
[A]:
The Alexander ALX400 ( later known as the TransBus ALX400 and the Alexander Dennis ALX400 ) is a 2-axle double-decker low-floor bus body .