蓝

蓝

Blue.

Here, '蓝天' (blue sky) uses '蓝' as an adjective describing a natural phenomenon.

天上的蓝天令人心旷神怡。

The blue sky overhead is very refreshing.

In this sentence, '蓝色' (blue color) employs '蓝' as the root word forming a noun phrase to describe an attribute.

她喜欢蓝色的衣服，因为蓝显得清新优雅。

She likes blue-colored clothes because blue appears fresh and elegant.

In '蓝鲸' (blue whale), '蓝' is used metaphorically in a noun compound, representing the distinct color associated with the whale.

蓝鲸是世界上最大的海洋生物。

The blue whale is the largest marine creature in the world.