2018-09-20 口语自测

Xcode 的暗黑模式只能在 macOS 10.14 Mojave 中使用。
The Dark Mode of Xcode is only available on macOS 10.14 Mojave.

苹果为 Xcode 10 发布了一款新的暗黑模式，我已经下载了测试版，但是没有发现可以打开这种模式的选项。
Apple announced a new Dark Mode for Xcode 10. I've downloaded the beta but now I can't find any option to turn on it.

macOS Mojave 新增了暗黑接口，它为 Xcode 10 带来了暗黑模式。你可以通过系统偏好设置打开它。
macOS Mojave has a new dark interface which brings dark mode to the Xcode 10. You can switch it on from System Preferences.