This is the 939th most frequent Chinese word.
强烈
Strong; intense.
In this sentence, '强烈' (strong/intense) is used as an adverb to emphasize the extent or degree of the noun '支持' (support).
他对新提出的计划表示强烈支持。
He expressed strong support for the newly proposed plan.
Here, '强烈' acts as an adjective to describe the noun '气味' (smell), indicating its intensity.
那个强烈的气味让人难以忍受。
That strong smell is unbearable.
In this context, '强烈' is being used as an adjective to modify the noun '使命感' (sense of mission), describing the strong and intense feeling associated with it.