粮食安全的英文：
Food security

参考例句：

Food security: The availability of adequate food supplies for a target population.
食物安全，粮食安全:指对目标人口具有足够的粮食供应。

food是什么意思：
n. 食物，食品；养料

Will this food keep?
这食品能放得住吗？

They are famishing for food.
他们因缺乏食物而正在挨饿。

Do you know where to buy dog food, rabbit food, and cat food?
你知道在那里买狗粮，兔粮，跟猫粮吗？

Do you know where to buy dog food, rabbit food, and cat food?
你知道在那里买狗粮，兔粮，跟猫粮吗？

Do you prefer northern food or southern food?
你喜欢北方的食物还是南方的食物?

security是什么意思：
n. 安全，安全感；防护；保证；保障；证券

a security guard
安全警卫

This is a secure anchorage.
这是个安全泊地。

Underwrite securities
包销证券

The property was pledged as security for loans.
这地产被当作贷款的抵押。

Mortgage Backed Securities
以房地产抵押作担保的证券