儿童先习得母语，然后可能会学习第二种语言。
A child acquires his mother tongue. He may try to learn a second language latter.
孩子学习第二种语言能帮助他们对不同文化的学习。
Exposing your child to a second language will help him learn about other cultures.
孩子学习第二种语言能帮助他们对不同文化的学习。
Exposing your child to a second language will help him learn about other cultures.
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