once i was seven years old
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once i was seven years old 基本解释
我七岁的时候
重点词汇
once adv. 一次，一趟；一倍；曾经；一旦 conj. 一旦…就…；一经 n. 一次，一回
seven num. 七；七个；第七 n. 七；七个
years n. 年代；岁月；年；年龄
once i was seven years old是什么意思 once i was seven years old怎么读 once i was seven years old中文意思 翻译
