1·America is actively supporting the hunt for four rebel leaders of Uganda's Lord's Resistance Army, which continues to wreak havoc in the region.
美国正在积极支持追捕乌干达上帝抵抗军的四名领导人，这支武装继续肆虐于这个地区。
2·Scientists have improved capabilities for predicting some volcanic eruptions, but only if they know which mountains to monitor. Long-dormant volcanoes can awaken unexpectedly to wreak havoc.
虽然科学家们在不断提高对火山喷发的预测能力，但即使他们知道要监测哪座山，其他长时间休眠的火山也可能突然喷发肆虐。
3·The problem came in March when a mutation showed up that scientists knew would wreak havoc, but it was too late.
到了去年三月，一种流感病毒的变种突然出现了，科学家们知道它有肆虐的可能，但为时已晚。
4·These molecules wreak havoc, damaging the parts of the leaf that are in the process of recovering and transporting nutrients back to the rest of the tree.
这些氧分子横行肆虐，破坏了树叶中正在进行回收将剩余营养盐输送回树木的那部分组织。
5·In a mysterious dark city, yellow sand storms wreak havoc.
一座神秘的黑暗之城，风暴肆虐，黄沙漫天。