求翻译：世界人口持续增加、粮食产量波动及粮食价格居高不下使得粮食安全成为全球关注的重大问题。预计到2050年全球人口将从现在的69亿增加到90亿，除了需要更多粮食满足食物需要，以生物质能源为代表的经济发展也将消费更多粮食，这些都要求我们必须提高粮食产量。与此同时，如何保证生态环境安全与农业生产可持续性发展也是当前面临的挑战。如何才能解决粮食安全带来的系列问题呢？是什么意思？

The world's population continues to increase, fluctuations in food production and food security, food prices remain high making the major issues of global concern. By 2050, global population will grow from 6.9 billion to 90 billion, in addition to need more food to meet food needs, to biomass, repre

World population continues to grow, food production and food prices fluctuate high makes food security has become a major issue of global concern. It is expected that by 2050 global population will increase from the current 6.9 billion to 9 billion, in addition to more food to meet food needs, with

The world population increases, the grain yield undulation and the grain price continually stays at a high level enables the food security to become the global attention the major issue.Estimated the global population 6,900,000,000 increases to 2050 from the present to 9,000,000,000, will meet food

Fluctuation of the world's population continued to increase, food production and food prices made food security a major issues of global concern. By 2050 the world population will increase from the current 6.9 billion to 9 billion, we need more food to meet food needs, based on biomass energy as the

Fluctuation of the world's population continued to increase, food production and food prices made food security a major issues of global concern. By 2050 the world population will increase from the current 6.9 billion to 9 billion, we need more food to meet food needs, based on biomass energy as the