水面下的

A world without professors or specialists or house–keepers with the profiles of policemen, a world which one could slice with one's thought as a fish slices the water with his fin, grazing the stems of the water–lilies, hanging suspended over nests of white sea eggs...How peaceful it is drown here, rooted in the centre of the world and gazing up through the grey waters, with their sudden gleams of light, and their reflections—if it were not for Whitaker's Almanack—if it were not for the Table of Precedency!

这个世界里没有教授，没有专家，没有警察面孔的管家，在这里人们可以像鱼儿用鳍翅划开水面一般，用自己的思想划开世界，轻轻地掠过荷花的梗条，在装满白色海鸟卵的鸟窠上空盘旋……在世界的中心扎下根，透过灰黯的海水和水里瞬间的闪光以及倒影向上看去，这里是多么宁静啊——假如没有惠特克年鉴——假如没有尊卑序列表！

As I sit at my window this summer afternoon, hawks are circling about my clearing; the tantivy of wild pigeons, flying by two and threes athwart my view, or perching restless on the white pine boughs behind my house, gives a voice to the air; a fish hawk dimples the glassy surface of the pond and brings up a fish; a mink steals out of the marsh before my door and seizes a frog by the shore; the sedge is bending under the weight of the reed-birds flitting hither and thither; and for the last half-hour I have heard the rattle of railroad cars, now dying away and then reviving like the beat of a partridge, conveying travellers from Boston to the country.

在这一个夏天的下午，当我坐在窗口，鹰在我的林中空地盘旋，野鸽子在疾飞，三三两两地飞入我的眼帘，或者不安地栖息在我屋后的白皮松枝头，向着天空发出一个呼声；一只鱼鹰在水面上啄出一个酒涡，便叼走了一尾鱼；一只水貂偷偷地爬出了我门前的沼泽，在岸边捉到了一只青蛙；芦苇鸟在这里那里掠过，隰地莎草在它们的重压下弯倒；一连半小时，我听到铁路车辆的轧轧之声，一忽儿轻下去了，一忽儿又响起来了，像鹧鸪在扑翅膀，把旅客从波士顿装运到这乡间来。

The steam acts upon the surface of the water in the receiver, which surface only being heated by the steam, it does not condense, but the steam gravitates or presses with an elastic quality like air, and still increasing its elasticity or spring, until it counterpoises, or rather exceeds, the weight of the column of water in the force pipe, which then it will necessarily drive up that pipe; the steam then takes some time to recover its power, but it will at last discharge the water out at the top of the pipe You may see on the outside of the receiver how the water goes out, as well as if it were transparent; for, so far as the steam is contained within the vessel, it is dry without, and so hot as scarcely to endure the least touch of the hand; but so far as the water is inside the vessel, it will be cold and wet on the outside, where any water has fallen on it; which cold and moisture vanish as fast as the steam takes the place of the water in its descent.

&&蒸汽行为后，水面在接收端，而只是表面被加热水蒸汽，它不浓密，但相互依赖蒸汽或印刷机具有弹性质量一样的空气，并仍在增加其弹性，或春天，直到它网，而超过重量栏水警队管道，然后它一定会推到管；蒸汽则需要一段时间来恢复其权力，但它会在最后排放水出顶管，你可以看到外面的接收机如何当然水，以及如果它的透明度；，目前为止由于蒸汽载船，它是未经干燥，所以作为热几乎要忍受至少触摸的手；但到目前为止，由于水内的船只，将寒冷和潮湿对外面，那里没有水落下；其中寒冷和水分消失快蒸汽需地方水在其后裔。

However, it is unavoidable the spillage and leakage of crude oil and oil products occur in the processes of oil exploitation, refinement, transportation and application. First of all, a small amount of light hydrocarbons volatilizes into atmosphere while the others can stay in the unsaturated zone or reach groundwater table under the action of gravity and capillary pressure, which may directly or indirectly cause oil pollution of groundwater system.

但是，在石油的开采、炼制、运输和使用的过程中，不可避免地会有大量原油和石油制品抛洒或泄漏于地面，其中的一些轻质石油组分通过挥发进入大气，而绝大部分石油会在重力和毛细力的作用下渗入包气带，或者透过包气带达到地下水面，从而间接或直接地污染地下水。

For an instant, I comprehended a liquid shaft of sunlight, a corner of the gray boulder disappearing into the gravel and rocks of the bottom, and somewhere ahead of me a pair of white legs treading water beneath a cloud of sparkling bubbles. Eerie, muffled laughter and shouts came from somewhere above me.

第一瞬间，我还能弄清楚周遭的事物﹕一柱阳光透水而下﹔灰色巨石的一角没入潭底的石砾中﹔前方一处﹐有两条白皙的腿踩着水，溅起一堆闪亮的水泡﹔还有笑声叫喊声从水面上传来﹐声音瓮然﹐令人发直。

When you are at water level, against the sharp while background of the Arab town the bodies describe a copper-colored frieze.

当你浮在水面，迎着刺眼的阳光向岸上看去，沙滩上横陈的胴体在阿拉伯城镇的映衬下就像一条古铜色的带子。

It will thus be seen that a plane equipped with pontoons made according to the plan of my new hull will lift a larger load, and load conditions being equal will leave the surface of the water quicker at a given speed or will actually take off at a much lower speed than with the conventional pontoon.

它将由此可见，飞机配备浮筒根据计划，我的新的船体将电梯较大的负荷，以及负载条件下平等会离开水面更快在某一速度或将实际起飞1低得多的速度比与传统的浮桥。

But when I got to shore pap wasn't in sight yet, and as I was running her into a little creek like a gully, all hung over with vines and willows, I struck another idea: I judged I'd hide her good, and then,'stead of taking to the woods when I run off, I'd go down the river about fifty mile and camp in one place for good, and not have such a rough time tramping on foot.

不过我一上岸，不见爸爸的影子。我把小舟划到了一条类似溪沟的小河浜里，水面上挂满了藤萝和柳条，这时我心生一计。我断定，小舟我能藏好，不会有差错，等我出逃时，不必钻树林子了，不妨下到下游五十英里开外的去处，挑一个地方露营扎寨，免得靠双脚走，搞得累死累活的。

At night, the multicolored lights shines on the water, the fish had his head above water, in the lighting dance, frog side accompaniment to cricket in the next song, the square along with wonderful music, people danced a Waving Dance ...... now Qing river can be exuberant.

到了晚上，五彩的灯光照在水面上，鱼儿们把头露出水面，在灯光下舞蹈，青蛙在旁边伴奏，蛐蛐在旁边歌唱，广场上的人们随着美妙的音乐跳起了摆手舞……现在的清江河可热闹了。

The experiments results verified the effectiveness of the three degrees freedom input of parallel decoupling rowing driving mechanism and the correctness of the theory analysis about water strider robot in this paper. At last, it appeared that the water stride robot in this paper has good velocity response characteristics, motion flexibility, high rowing efficiency and convenient control.

在上述理论研究基础上，研制仿水黾机器人样机，在实验室环境下对仿水黾机器人进行水面前进、转弯、负重实验，实验结果验证了本文提出的仿水黾机器人三自由度输入并联解耦划水驱动机构的有效性和本文理论分析的正确性，该机器人具有良好的速度响应特性、运动灵活性，划水效率高、控制简单方便。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。