Others have combined glass with solar cells that are thinner and smaller but they can have drawbacks like lower power efficiency and less transparency.

还有公司将玻璃与更薄更小的太阳能电池结合起来，这种产品也会有一些缺点，比如它的储电效率和透明度都比较低。

In fact, over 1.7 million apps are in the App Store using Metal through Apple system frameworks and benefitting from Metal's performance and power efficiencies automatically.

实际上，在苹果应用商店中有超过170万个应用程序通过 Apple 系统框架使用 Metal，并且自动从 Metal 的性能和功效中获益。

And of course, it's powered by the Kirin 980 processor, which should have up to a 20% speed improvement and up to a 40% power efficiency improvement compared to last year.

所搭载的麒麟980处理器能将速度从去年的提速20%上升到40%。

And all this performance is optimized for power efficiency so you get all-day battery life, up to 18 hours, and Fast Charge gets you back to 9 hours of battery life in just 30 minutes.

为提升电源效率，这些性能都进行了优化，全天续航时间可长达18小时，快速充电30分钟就能让电脑再次续航9小时。