1 欣赏大自然的风景 to appreciate the scenery of nature 2 培养公德心 to cultivate the public mindedness 3 维护健康 to maintain health 4 保护环境 to protect the environment 5 开拓视野 to broaden the horizon 6 开拓心胸 to broaden the mind 7 调剂生活 to make life pleasant
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