求翻译：What contributed to these changes? I think the reasons are as follows. To start with, with the rapid development of economy, people earn by far more money than they used to. Thus, people are able to afford traveling expenses. Secondly, people think it important to get well-informed about the outside world in this new era when everything is on the move. Traveling, of course, is a sure way to achieve this goal. What's more, in this competitive society, people are usually under great stress. However, it is not difficult to find traveling an effective way to relieve people's stress and get relaxation. Last but not least, by traveling outside, people are close to nature, which is not only beneficial to both their health and peace of mind.是什么意思？

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