随着低沉的隆隆声，螺旋桨开始旋转起来。
With a low-pitched rumbling noise, the propeller began to rotate.
绳索缠住了螺旋桨。
提倡者恰当地为修理螺旋桨拨专款。
The prophet appropriately appropriated the fund for repairing propeller.
与老式螺旋桨发动机的叶片不同，这些叶片在发动机的后部旋转。
Unlike the blades on old-fashioned propeller engines, these blades spin around at the back of the engine.
这些古巴人在一辆1951年的雪佛兰卡车上安装了浮筒和螺旋桨。
The Cubans had attached floats and propellers to a 1951 Chevy truck.
“人类天使”比空气还轻，有像划艇一样的桨，飞行员可以摇动它们。
The Man Angel was lighter-than-air and had paddles like a rowboat that the aviator could pump.
他到了一个能看见他老家的地方，靠在桨上，仔细地观察着这片土地。
Arriving within sight of his old home, he rested on his oars and surveyed the land cautiously.
现在我真的很沉迷机械装置，但是你可以想象重物掉落的时候会带动桨轮旋转。
Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping weight can cause a paddlewheel to turn.
推进器是由火箭发动机提供的，而不是螺旋桨和方向舵，这使得转向变得困难。
Propulsion is provided by a rocket engine, rather than a propeller and rudder, which makes steering difficult.
“奇怪，我感到很疲倦，兰特。”莫尔说，它有气无力地伏在桨上，由着船漂流。
"I feel strangely tired, Rat," said the Mole, leaning wearily over his oars as the boat drifted.
它是一个非常寒酸的旋转玩具，上面还有一个在风吹螺旋桨时候就会砍木头的小人。
It is a very tacky whirligig with a little man who chops wood as the wind blows the propeller.
如果这里有一个马达，使桨上下移动，就可以在水槽的一端形成波浪，从左到右扩散。
If you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.
这是一个很简单的问题，通过观察重量是多少以及它下降了多远，来确定桨轮做了多少功。
It's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddlewheel.
菲律宾的公主港地下河国家公园的主洞入口处，停靠着几只空空的桨船，在等待桨手的到来。
Empty paddle boats await rowers at the main cave entrance at Puerto Princesa Subterranean River National Park in the Philippines.
上龙用四根桨状的四肢推动它庞大的身体在水里游来游去，轻而易举地就能掠食形似海豚的鱼龙。
Using four paddle-like limbs to propel its bulky body through the water, the pliosaur made easy work of passing prey such as dolphin-like ichthyosaurs.
接下来，研究人员引入了第三种选择，用第三只桨启动一个新的试验，让海豚选择跳过困难的试验。
Next the researcher introduced a third option, a third paddle that would initiate a new trial, giving the dolphin the choice of passing on difficult trials.
空军很快成为了这家智库的主要承包商，兰德开始就从螺旋桨涡轮到导弹防御等一切问题进行咨询。
The Air Force quickly became the think tank's main contractor, and Rand began consulting on everything from propeller turbines to missile defense.
换句话说，通过按下传递桨，海豚不必等待，可以通过直接进入下一个试验来增加获得全部奖励的可能性。
In other words, by pressing the pass paddle, the dolphin avoided having to wait and hasten the possibility of a full reward by moving directly to the next trial.
这些塔会升出水面并且亮灯，用以警示船只避让，同时也能够完全升到水面以上，以方便维修螺旋桨和清理叶片上的水草。
The towers will stick out of the water and be lit, to warn shipping, and also be designed to be lifted out of the water for maintenance and to clean seaweed from the blades.
她每天大约划2万桨。
水鼠，这个善良小家伙，稳当地划着桨，不去打扰他。
The Water Rat, like the good little fellow he was, sculled steadily on and forebore to disturb him.
鼹鼠莫尔一挥手，把双桨甩了回去，在深深插进了水里。
The Mole flung his sculls back with a flourish, and made a great dig at the water.
他们很快就开船了，由汤姆掌舵，哈克划后桨，乔划前桨。
They shoved off, presently, Tom in command, Huck at the after oar and Joe at the forward.
“这是独一无二的事。”水鼠俯身划起桨来，一本正经地说。
"It's the only thing," said the Water Rat solemnly, as he leant forward for his stroke.
它的船体比桨帆船更宽更深，因此可以装载更多的货物：更高的稳定性使它可以增加多个桅杆和帆。
It had a wider and deeper hull than the galley and hence could carry more cargo: increased stability made it possible to add multiple masts and sails.
游戏需要设定飞行路线，来安全引导特大喷气客机到大型跑道、引导小型螺旋桨飞机至简易跑道、以及引导直升机到直升机场。
The game involves setting flight paths to safely direct jumbo jets to the large runway, smaller prop planes to the airstrip, and helicopters to the helipad.
他们每分钟划40桨。
这只船用六把桨划。
杰米沮丧地看着没有桨的船被冲下河去。
Jamie watches in dismay as the oarless boat is swept down the river.
杰米沮丧地看着没有桨的船被冲下河去。
Jamie watches in dismay as the oarless boat is swept down the river.
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