来自刘小青的问题
可数名词变复数babycenturyfactoryworrydutywayholidaykilopianonegroheroradiopotatozooshelfhalfblousebrush
可数名词变复数
baby
century
factory
worry
duty
way
holiday
kilo
piano
negro
hero
radio
potato
zoo
shelf
half
blouse
brush
