If you've had the same iPhone for a couple of years or more, you've probably started to notice its performance slowing down a little, especially on newer versions of the software. Apple has even been sued for the slow performance in iOS 9 when it is used on an iPhone 4s.
如果你这几年一直用的是同一部苹果手机，你一定注意到它的运行速度变慢了，更新到最新系统后尤其如此。甚至曾有用户因iOS 9操作系统在iPhone 4s上运行太慢而起诉苹果公司。
But for anyone not up to taking such drastic measures, a solution has emerged that can provide an immediate speed boost by clearing up memory in the phone's App Store.
但不是每个人都愿意采取这样的过激之举。对于其他人来说，新的解决办法已经出现了：清空苹果应用商店的内存，手机就能立即提速。
San Francisco developer Zachary Dryer shared the hidden trick on Twitter, revealing that pressing a series of buttons in the iOS App Store can get rid of a backlog of stuck app updates.
旧金山程序员扎卡里·德赖尔在推特上分享了这个小窍门。他透露，点击苹果应用商店的一系列图形按钮，可以清空因应用更新卡住而积压的数据。

On the App Store, press any one of the five buttons along the bottom of the app 10 times in a row to clear the cached memory. This is data that is meant to be held temporarily but can continue to take up precious resources due to a software error.
在应用商店，连续点击下方五个按钮中的任一按钮十次，可以清空缓存。这些数据本该是暂时保存的，但会因为软件的错误而持续占用宝贵的内存。
As long as the same button is pressed in succession, the screen should go white for a couple of seconds and return to the App Store's homepage, with any app update backlogs cleared.
连续点击同一个按钮，手机会白屏几秒钟，然后返回到应用商店主页。此时，因应用更新而积压的所有数据已被清空。
This is a useful trick if your App Store gets stuck, which can mean app updates not coming through, but should also provide a speed boost. The trick will also work on the iPad.
应用商店运行慢时，这招很管用。尽管它意味着应用更新失败了，却能帮助提速。这招也适用iPad。
According to the developer, the trick works in iTunes, iBooks, App Store and the Apple Watch app, but not in Podcasts, Music, Game Center or iMessage.
这位程序员称，这招对清理iTunes、iBooks、应用商店以及苹果手表应用的缓存都很奏效，但不适用播客、音乐、游戏中心和iMessage应用。