蜜芽传媒 Learning English - 蜜芽传媒 Q&A “你问我答”: 名词单复数的区别:'wall' and 'walls' - 蜜芽传媒 Sounds

蜜芽传媒 Learning English - 蜜芽传媒 Q&A “你问我答”: 名词单复数的区别:'wall' and 'walls' - 蜜芽传媒 Sounds
蜜芽传媒 Q&A “你问我答”: 名词单复数的区别:'wall' and 'walls'
Are all nouns plural?
Are all nouns plural?