"an" in Chinese (Simplified)
一个一 (yī)
Definition
用于以元音音素开头的名词前，表示“一”或单个事物的词。
Usage Notes (Chinese (Simplified))
用于发元音音的单词前，不仅限于元音字母开头（如 'an hour'）。表示不特指的某个对象。
Examples
I have an apple.
我有**一个**苹果。
She saw an elephant at the zoo.
她在动物园看到**一只**大象。
Do you want an orange?
你想要**一个**橙子吗？
It's an honor to meet you.
很荣幸能见到你。
He'll be here in an hour.
他将在**一**小时内到达。
She’s eating an ice cream right now.
她正在吃**一个**冰淇淋。