原始问题：
冠词“a”与“an”的使用规则解析
The appropriate utilization of the indefinite articles "a" and "an" prior to a noun often appears capricious and perplexing.
冠词“a”与“an”的使用规则解析
The appropriate utilization of the indefinite articles "a" and "an" prior to a noun often appears capricious and perplexing.
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