他们认为，我们所能做的最好的事情就是把它控制在一个合理的水平，而在这方面目前唯一重要的选择就是减少碳排放。
They believe that the best we can do is keep it at a reasonable level, and at present the only serious option for doing this is cutting back on our carbon emissions.
值班时间要始终开启对讲机，保证通讯通畅。注意合理控制对讲机音量，以不影响客人和其他员工的正常工作。
Keep the interphone in Wking der on duty to ensure a free communication. Control the volume of interphone so that not to effect on guests other associates.
所以，有合作关系的国家要建立合理的目标去控制污染。
As a consequence, every country involved in the partnership should establish some reasonable goals to control the pollution.
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