求翻译：美国孩子很小的时候就参与家庭事务,在成长过程中逐渐形成了市场经济思维,18岁之后就独立于父母生活,大多数靠做兼职支付自己的额外开支。是什么意思？

American children when he was very involved in family affairs, gradually formed in the process of growing market economy thinking, after 18 years of age, independent of the parents live, most rely on part-time pay for their own additional expenses.

A very small child in the United States on the time involved in the Family Affairs, in the process of growing up has gradually built up a market economic thinking, after 18 years old living in independent of their parents, most rely on as a part time paid their own expenses.

American child very small time on the participation family business, has formed the market economy thought gradually in the growth process, after 18 years old on is independent lives in the parents, the majority depends on makes the concurrent job to pay own extra expenditures.

United States child was little involved in the family business, gradually forming a market economy thinking during the growth process, independent of the parents after the age of 18, most rely on part-time paid their additional expenses.

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