nature 自然 相关话题英语问题

<p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><img data-key="0" src="data:image/png;base64,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...