adverbs are words that are used to modify or describe verbs, adjectives, and other adverbs. they tell when, where, how, and the extent to which something happens. just like adjectives, adverbs can make language more precise and detailed, but they are not always necessary for conveying the basic meaning of a sentence. for example, the sentence "she sings beautifully" uses the adverb "beautifully" to describe how the woman sings, but the essential information is that she sings.

请将以上文本改写为专业化的英文，并在不改变其意义的前提下，调整语句使其符合期刊发表的正式规范。
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Adverbs are elements of speech that serve to modify or describe verbs, adjectives, and other adverbs. Their primary functions include indicating the temporal, spatial, or modal context, as well as the degree or extent of an action. Similar to adjectives, adverbs contribute to enhancing the precision and specificity of language. However, it is important to note that their inclusion is not always indispensable for the conveyance of the fundamental meaning of a sentence. For instance, the phrase "she sings beautifully" employs the adverb "beautifully" to elaborate on the manner in which the woman sings, yet the core information remains that she engages in singing.

This revision adheres to the formal and professional standards typically required for academic journals. It maintains the original meaning while restructuring the sentences to elevate their academic tone.
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