使用粮食制作燃料已经被普遍认为是个坏主意，因为鼓励森林砍伐，并有可能导致粮食短缺。
Making fuel from food crops is now almost universally regarded as a bad idea, encouraging deforestation and potentially leading to food shortages.
现在，非洲最大的经济体正面临着一场粮食危机，非洲主要的番茄田被一种昆虫毁坏，导致全国范围内的番茄短缺，番茄价格不断上涨。
Now, Africa's largest economy is facing a food crisis as major tomato fields have been destroyed by an insect, leading to a nationwide shortage and escalating prices.
由于当前世界粮食短缺是环境趋势导致的，因此必须扭转这一趋势。
Since the current world food shortage is trend-driven, the environmental trends that cause it must be reversed.
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