下面拿几个句子来练习一下：

1. Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade.

鉴于夜间尚可谋生，并且白天的猎物资源已经被全部占用，自然选择最终使蝙蝠们在夜间捕猎行里大显身手。

2. The light source must therefore be immensely brighter ifit is to be used as a headlight to illuminate the path, than if it is to be used as a signal to others.

如果要作为灯光来照亮道路的话，光源必须比作为信号灯时明亮得多。

3. In any event, whether or not the reason is the energy expense, it seems to be the case that, with the possible exception of some weird deep-sea fish, no animal apart from man uses manufactured light to find its way about.

无论是不是能量消耗的缘故，情况似乎是这样：除了人类以外没有动物使用自己制造的光源探路，一些深海怪鱼可能例外。

4. When the number 4 can be registered in the mind as a specific word, independent of the object being referenced, the individual is ready to take the first step toward the development of a notational system for numbers and, from there, to arithmetic.

当“四”这个数字在思维中可以被当成一个独立于参照物体之外的字时，这个人就准备好向符号化数字的阶段发展了，然后再向算数阶段发展。

5. So ordinary and routine has this become to us that it takes a determined leap of the imagination to grasp the impact of those first moving images.

如今，对我们来说，电影变得如此稀松平常，以至于我们需要充分发挥想象力才能领会那些最初的移动影像所产生的影响。

6. But it is worth trying, for to understand the initial shock of those images is to understand the extraordinary power and magic of cinema, the unique, hypnotic quality thathas made film the most dynamic, effective art form of the 20th century.

但这值得一试，因为了解那些影像早期的震撼力就是了解电影院的非凡力量与魔力，这种独一无二、引人入胜的特质使得电影成为 20 世纪最有活力和影响力的艺术形式。

7. Almost unbelievably,it is a mere 100 years since that train arrived and the audience screamed and fled, convinced by the dangerous reality of what they saw, and, perhaps, suddenly aware that the world could never be the same again — that, maybe, it could be better, brighter, more astonishing, more real than reality.

不可思议的是，从火车在屏幕上出现，观众尖叫着逃离，以为看到的是很危险的真实情景，然后大概又突然意识到世界将不再如原来这般—它或许会变得更加美好、光明、令人惊讶、比现实更加真实，电影业经历这些才不过用了 100 年的时间。

8. Eliminatingthe secrecy surrounding pay by openly communicating everyone's remuneration,publicisingperformance bonuses and allocating annual salary increases in a lump sum rather than spreading them out over an entire year are examples of actionsthat will make rewards more visible and potentially more motivating.

通过公开讨论每个人的酬劳减少隐秘性、公布业绩分红、一次性地分配年度工资涨幅而非将其在全年平均分配，这些做法都会让奖赏更加清晰可见，对员工更具有潜在的鼓励作用。

9. In order for the structure toachieve the size and strength necessary to meet its purpose, architecture employs methods of support that, because they are based on physical laws, have changed little since people first discovered them—even whilebuilding materials have changed dramatically.

为了达到建筑的目的，需要一定的尺寸和强度，尽管建筑材料已经有了很大变化，建筑学采用的支撑法几乎跟最初人们发现这一方法的时候没什么变化，因为这些方法基于物理定律。

10. Contrary to the arguments of some that much of the pacific was settled by Polynesians accidentally marooned after being lost and adrift, it seems reasonable that this feat was accomplished by deliberate colonization expeditions that set out fully stocked with food and domesticated plants and animals.

一些人认为，太平洋人大部分都是由于波利尼西亚人在海上迷路、漂泊，而不小心发现并定居下来的，与这种观点相反的是，这些功绩是通过有目的的殖民远征来实现的，他们出发时带上了充足的食物和家养动植物。