It seems almost certain that by2001the United States will no longer be a great foodexporting nation and that，if necessity forces exports，it will be at the price of belttightening at home.
几乎可以肯定，到2001年美国将再也不是一个食品输出国;如果必须出口的话，那么其代价就是美国国内人民将勒紧裤带。
If this trend continues, there will be great economic impacts and social problems influencing Macau in the future. Therefore, the establishment of the pension system is a necessity and under urgency.
长此下去，将对澳门的施政、经济以及社会造成极大隐忧，退休金制度的建立、健全具有必要性和紧迫性。
The data should be properly handled when the large-scale terrain environment is been rendered, it is of great necessity to meet the requirement of real-time rendering.
大规模地形场景在绘制时，通常需要对数据进行适当的处理，以满足实时性的要求。
The data should be properly handled when the large-scale terrain environment is been rendered, it is of great necessity to meet the requirement of real-time rendering.
大规模地形场景在绘制时，通常需要对数据进行适当的处理，以满足实时性的要求。
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