为了回答这个问题，要用卫星校准你的全球定位系统，核对坐标，再用铅笔把它们标注在航海图中就可以了。
To find out, align your global positioning system with some satellites, check the co-ordinates and pencil them on to a chart.
G 20峰会确实做了些实质性的事情。它提出了构建基于全球粮食供应与储存信息的综合收集核对系统的倡议。
The G20 is actually doing something productive and launching an initiative to create a system to more comprehensively collect and collate information on global supply and reserves of grain staples.
通过设置这套系统，ITC可以在任何地方让农民在线上核对公司在当地大市场提供的价格。
By setting up the kiosks, ITC enabled farmers to check that the prices being offered at their local mandi were in line with prices elsewhere.
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