按照联合国粮农组织总干事 何塞·格拉齐亚诺·达席尔瓦的话讲，生物燃料“可以成为强化粮食安全的有效途径。
In the words of José Graziano da Silva, Director-General of the Food and Agriculture Organization of the United Nations, biofuels “can be an effective means to increase food security.”