VOA慢速英语:Control of Weeds by Natural Enemies

短语讲解：

1. But researchers are finding natural ways to deal with unwanted plants.

deal with 与…交易; 应付;  对待
例句：Deal with it head on.
正面处理这件事情。

2. Scientist Steven Mirsky walks through a field of dry corn in search of enemies.

in search of 寻找
例句：He went in search of a doctor for his sick wife. 
他去为他生病的妻子找医生。 

3. The sight of some of those enemies causes him to cry out - look at the size of this pigweed plants right here.

cry out 呼喊，尖叫
例句：You cry out in frustration.
你哭了，带着一丝挫败。

4. Plants pushed down in the spring break up and become rich soil, that means better harvests in the fall.

break up 结束; （使）破碎
例句：Her coalition would probably break up.
她的联盟很可能会分裂。