VOA慢速英语:Study Links Climate Change to Changes in Crop Yields

词汇讲解：

1. yield n. 产量, 收益
例句：All these have helped raise farm yields steadily.
所有这些都有助于农业产量的稳步提高。

2. decrease v. (使)缩短; 减小, 减少
例句：The traffic accidents in the city decreased last year.
该城市去年交通事故减少了。

3. trend n. 趋势, 倾向
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。

4. exert vt. 竭力；努力
例句：He never exerts himself to help anyone.
他从未尽力帮助别人。

5. drag n. 累赘, 障碍
例句：She loves her family, but they're a drag on her career.
她热爱自己的家庭, 但家庭却是她事业的拖累。

6. exception n. 例外
例句：This is considered an exception to the rule.
我们把这看作是该规则的例外。

7. breed v. 饲养, 培养
例句：She bred her daughter to become a statesman.
她把她的女儿培养为一名政治家。

8. tolerance n. 忍耐力; 忍受性; 耐力; 耐量
例句：Human beings have limited tolerance of noise.
人类对噪音的忍耐力有限。

9. frequent adj. 时常发生的, 常见的
例句：Traffic accidents are alarmingly frequent of late.
近来交通事故频繁得吓人。

10. uNPRedictable adj. 无法预言的, 不可预测的
例句：Changes in the stock market are, of course, highly un -predictable.
股票市场的变化当然是变幻莫测。

11. shift n. 转换, 转变
例句：A sudden shift in the wind warned of the coming storm.
风向的突然改变预示暴风雨来临。

12. pasture n. 牧草
例句：These lands afford good pasture.
这些地方有好的牧草。