They had three children between the ages of five and nine.
他们共有三个孩子，大孩子九岁，小孩子也有五岁了。
Piano training of young children can begin around the ages of three to four.
幼儿的钢琴训练从三至四岁就可以开始了。
Older babies and toddlers from ages one to three are often more of a challenge.
照顾较大的宝宝和一至三岁的学步儿比较有挑战。
Older babies and toddlers from ages one to three are often more of a challenge.
照顾较大的宝宝和一至三岁的学步儿比较有挑战。
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