dark的比较级： darker；最高级： darkest

dark：adj.黑暗的;昏暗的;阴暗的;深色的;暗色的;近乎黑色的

例句：

The film is a dark vision of the future.

这部影片预示着黯淡无光的未来。

The use of light and dark symbolizes good and evil.

用光明与黑暗来象征善与恶。

Even if you have dark skin, you still need protection from the sun.

即使你皮肤黝黑，仍需要防晒。

Try to get home before dark.

尽量在天黑前回家。