oaden one's mind 开拓视野
enrich one's knowledge 丰富知识
contact with different cultures 与不同文化交流
get to know the vastness of nature 见识大自然的广阔
refresh out mind 刷新了思想
oaden one's mind 开拓视野
enrich one's knowledge 丰富知识
contact with different cultures 与不同文化交流
get to know the vastness of nature 见识大自然的广阔
refresh out mind 刷新了思想