调整人地关系，使人类生产活动与自然环境相协调是防治泥石流的关键。
It is the key to prevent and cure debris flow to regulate mankind and land with harmonious of the relationship between the activities of production of mankind and the natural environment.
黄河中游早期文明起源及人类生产活动，与本区气候关系有很好的耦合性。
The early civilization origin and human activity of the middle reaches of Yellow River are closely related to the climate in this area.
在经过长时间浸染在大自然的美景中，突然在海边看到人类生产活动的迹象令人耳目一新。
After hours, days, of elemental splendour, it's bracing to see the seaside grow suddenly productive and menacing.
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