* Although CFCs may not harm the environment near the ground, they slowly travel upwards to the ozone layer where they are broken down by UV light into chlorine atoms. Here, the chlorine atoms eat away at the ozone.

虽然氟里昂并不破坏地面附近的环境，但它们能缓慢上升至臭氧层，被紫外线分解为氯原子，大量吞噬臭氧。

* Therefore, it is not always possible to provide a uniform size of foundation for the entire structure, even if it may support a uniform load.

所以，即使基础能承受相同的荷载，要为整个结构设计出相同尺寸的基础并不总是可能的。

* Although its form may change, energy can never be destroyed.

尽管能的形式可以改变，但绝不会消失。

5. 表示虚拟

might可以表示虚拟，可译为“能”、“会”等。如：

* The fact might have been predicted from the law of Conservation of Energy.

这一事实本可以根据能量守恒定律预料得到的。

Hr If there were no armature reaction the flux might be constant, as indicated by Curve I, Fig.16.2.

假如没有电枢反应，磁通量就会是个常数，见图16.2的曲线I。

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