粮农组织：食品价格在十二月大幅下跌

词汇讲解：

1. trend n.趋势, 倾向；流行
例句：The rise in violent crime is a disturbing new trend.
暴力犯罪的上升是一种令人担忧的新趋势。

2. witness v. 是发生…的地点（或时间、组织等）；见证
例句：The year 1849 witnessed a great war in Hungary.
一八四九年匈牙利发生了一场大战。

3. revise vt. 修订, 修改
例句：You should revise your opinion of him.
你应该纠正对他的看法。

4. commodity n.商品, 货物；有用的东西
例句：The prices of the commodities are quite stable this year.
今年各种物价相当稳定。

5. decline n. 下降, 减少, 衰退
例句：There has been a sharp decline in profits this year.
今年的利润大幅度下降。

6. appreciate v. (使)增值, 涨价
例句：Things appreciate as time goes on.
货物价格逐日上涨。

7. offset vt. 抵消, 补偿
例句：Their wage increases would be offset by higher prices.
他们增加的工资会被物价上涨所抵消。

8. bumper adj. 特大的, 丰盛的
例句：Farmers have reported a bumper crop this year.
据报道今年庄稼大丰收。

9. adjust v. (改变…以)适应; 调整; 校正
例句：He adjusted himself to new conditions.
他使自己适应新情况。

10. prediction n. 预言;预言的事物;预测
例句：This great prediction is coming true.
这一伟大的预言正在成为现实。