an 的英语意思
anan /ən; strong æn/ indefinite article, determiner 
查看全部语言翻译 used when the following word begins with a vowel sound用于后接单词以元音音素开头时: 
an orange一个橙子 an X-ray一张X光片
查看全部语言翻译 used when the following word begins with a vowel sound用于后接单词以元音音素开头时: an orange一个橙子 an X-ray一张X光片