在电气工程领域的英语考研真题中，考生往往需要理解和翻译专业术语。以下是一例答案：
Question: What is the function of a transformer in an electrical power system?
Answer: A transformer in an electrical power system serves the dual function of stepping up or stepping down voltage levels, depending on the specific application. It also isolates the primary and secondary circuits, providing safety and allowing for the transmission of electrical power over long distances with minimal power loss.
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