food security的用法和样例：
例句
- Bio-energy based on the grain has had the tendency of endangering the food security.
摘要以粮食为基础的生物能源已有危及粮食安全的倾向。 - As the energy crisis and food security increase severely, biofuel produced from lignocellulose as the substitution of gasoline has become the hotspot of biomass energy research.
摘要随着能源危机与粮食安全问题的日趋加重，以纤维质为原料生产石油替代燃料已成为生物质能研究的重点。
