短语讲解：

1. Officials are worried about that prediction because many people already suffer from a lack of food.

a lack of 缺乏
例句：Hard work can often make up for a lack of intelligence.
勤奋工作往往可以弥补智力的不足。

2. More than 800 million people go to bed hungry.

more than 多于
例句：It never takes more than an hour.
所用的时间从不超过一小时.

3. He says some of the best honey in the world comes from forests in southern Cambodia.

come from 来自
例句：Ambient noise may come from any direction.
外界噪声可以来自任意方向。

4. The oil from its seed can be used in soap, beauty products and food.

be used in 被用于
例句：A thermometer is used in the quantification of temperature.
温度计用于温度的定量化。