Erosion, of course, is one of the key reasons for its destruction, but human activity is also increasingly responsible.
当然，侵蚀是造成其破坏的主要原因之一，但人类活动应承担的责任也越来越大。
One key driving force behind bee destruction in Europe and North America has been a type of mite, the varroa destructor pest, which attacks bees and that beekeepers struggle to control, Neumann said.
欧洲、北美的蜜蜂面临的毁灭背后一个关键性的驱动力是一种叫做瓦螨的小虫，它们向蜜蜂发起进攻，而养蜂人则极力想要控制它们，诺依曼说。
Uncertainty is a key contributor to demand destruction.
不确定性是需求破坏的主要促成因素。
This engagement might take the form. of arrest, dispersal or destruction, depending on the situation, but the key is to build a tactical system of attack that avoids assault.
这种战斗可能是以逮捕，驱散或者破坏的形式进行，依赖于当时的情形，但关键是建立一套避免强攻的战术攻击系统。
The concentration of alternate stress is a key factor of fatigue destruction.
而交变应力集中是疲劳破坏的一个关键因素。
One key assumption in this paradigm is that poverty is a cause of environmental destruction and that economic growth can help both people and the environment.
在这个范式中的一个关键假设是，贫穷是造成环境破坏的原因，经济的增长才能帮助居民和环境。
However, once the natural gas explodes in the ignition procedure, its detonation injury scope, destruction scope and the accepted risk scope become the key points of ignition decision.
然而，点火过程中一旦发生天然气爆炸，其可能的爆炸伤害范围、破坏范围以及是否在可接受风险范围，就成为决策能否点火的关键。
However, once the natural gas explodes in the ignition procedure, its detonation injury scope, destruction scope and the accepted risk scope become the key points of ignition decision.
然而，点火过程中一旦发生天然气爆炸，其可能的爆炸伤害范围、破坏范围以及是否在可接受风险范围，就成为决策能否点火的关键。
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