Андрей Ставицкий (Редактор отдела «Наука и техника»)
Equal (0): Everything in this space must be equal to 0. The answer is 0-0, placed horizontally; 3-0, placed vertically.
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But questions remain about how realistic the goal and timeframe are, given recent and steep Nasa budget cuts, and some scientists are concerned that the plans are driven by geopolitical goals.，推荐阅读爱思助手下载最新版本获取更多信息
Screen size: 201 inches。业内人士推荐搜狗输入法下载作为进阶阅读