// 易错点5：必须将当前元素入栈（作为左侧元素的候选更大值，漏写则栈始终为空）
产业“家底”更加厚实。粮食产量连续两年稳定在1.4万亿斤以上，制造业增加值连续16年稳居世界首位，工业增加值对经济增长的贡献率升至35%，服务业增加值占国内生产总值（GDP）的比重增至57.7%。
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Last year a group of researchers from Nasa, the University of Plymouth and University of Texas called on the UN to include the protection of Earth's orbit in its sustainable development goals.
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