Translation of "Dull" in Chinese

The point of the pencil has become dull.

铅笔头钝了。

Never have I read such a dull book.

我从来没读过这么闷的书。

If not for music, the world would be a dull place.

如果沒有了音樂，這個世界一定會變得十分枯燥乏味。

The coffee enabled me to stay awake during the dull concert.

咖啡讓我在沉悶的音樂會中保持清醒。

Were it not for music, the world would be a dull place.

如果沒有了音樂，這個世界就會變得十分沉悶。

I have a dull pain in my temples and my mind feels like its covered with a thin layer of fog.

太阳穴钝钝地痛，意识似乎被笼罩上了一层薄薄的雾霭。