求翻译：第一幅图表示了，在20岁之前，有80%的人学习是与今后的事业有关，然后以每组大约10%幅度下降，在40-49组和over49组分别只有40%和大约20%的人学习是为了今后的事业。是什么意思？

The first picture, before the age of 20, 80% of people learning and future career, and then decreased to the range of about 10% of each group, only 40% in the 40-49 group and over49 group and about 20 % of learning is to a future career.

The first figure indicates that, at the age of 20, 80 percent of the people who are learning about the future of the business, and then to each group approximately 10 per cent decline in the 40 - 49, group 49 and over group, only 40 per cent and 20 per cent of the people who are learning in the futu

The first chart expressed, in front of 20 years old, some 80% person study will be and the next enterprise related, then will drop by each group of about 10% scope, will distinguish only then 40% in 40-49 group with the over49 group and about 20% person study is for the next enterprise.

The first picture, before the age of 20, 80% people learn is related to future careers, and ranges down to each group of approximately 10%, the 40-49 group and the over49 group only and 40% for about people learning to future careers.

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