红三叶的适应性也较好。
中度放牧并未使草地牧草产量和红三叶的重要值降低，同时使草地红三叶均质度系数保持在远低于1.0水平以下，但使土壤全氮含量下降0.085%。
Meantime it keeps the coefficient of homogeneity of red clover far below the 1.0 level but causes the total nitrogen content of soil to decrease by 0.085%.
伊莱克斯三叶虫等吸尘机器人，就是很好的例子。
This approach is exemplified by vacuuming robots such as the Electrolux Trilobite.
三叶虫在房屋周围飞来飞去，发出超声波信号，绘制出房间的地图，以备日后清洁时使用。
The Trilobite scuttles around homes emitting ultrasound signals to create maps of rooms, which are remembered for future cleaning.
例如，彼得·谢尔登对于三叶虫的研究，那是一种已灭绝的身体分节的海洋生物，他的研究让我们得以一窥三百万年以来一个海洋环境的进化过程。
For example, Peter Sheldon' s studies of trilobites, a now extinct marine animal with a segmented body, offer a detailed glimpse into three million years of evolution in one marine environment.
在这项研究中，观察到八种不同的三叶虫，每一种都经历了身体节数的逐渐变化。
In that study, each of eight different trilobite species was observed to undergo a gradual change in the number of segments.
我艰难地在狭长地带上种了半英亩的玉米，在这之间一块几乎平坦的地上种了三叶草。
I grow hardly a half acre of corn in narrow strips, with clover between the strips, on land that is almost level.
蕾丝设计包含玫瑰、蓟、水仙花和三叶草——英格兰、苏格兰、威尔士和北爱尔兰的象征。
The lace design incorporated rose, thistle, daffodil, and shamrock—the emblems of England, Scotland, Wales and Northern Ireland.
他飞奔过宅前的三叶草地冲向河边，他知道那里的河堤上有一条独木舟。
He sprinted through the clover fields in front of his mansion toward the water, where he knew a pirogue lay on the levee.
脊索是双边对称的，三叶裂的，分段的腔壁。
Chordates are bilaterally symmetrical, triploblastic, segmented coelomates.
在奥陶纪，大多数生命都生活在海洋里，所以海洋生物，例如三叶虫、腕足类动物与笔石动物的数量在此时急剧减少。
During the Ordovician, most life was in the sea, so it was sea creatures such as trilobites, brachiopods and graptolites that were drastically reduced in number.
按照数学家们的分类，三叶形是最简单的纽结。 所谓纽结，它是三维空间中不与自己相交的封闭曲线，或者说是三维空间中与圆周同胚的图形。
The trefoil is the simplest knot in mathematicians' classification.
不过倘若这样的解释是正确的，三叶虫和它的同类由何而来的问题将仍然神秘晦涩，一如往昔。
Yet if that is the right interpretation, it leaves the question of what evolved into the trilobites and their kind as mysterious as ever.
200多万年前的马蹄蟹化石，与今天的马蹄蟹几乎完全相同：它们是三叶虫最近的亲戚。
Horseshoe crab fossils over 200 million years old are almost identical to contemporary animals: They are the closest living relatives of the trilobites.
“能活着真是件好事”这只三叶状生物说道，它突出的触角和触须因为对未来的希望而断断续续的抖动着。
"It's a wonderful time to be alive, " said the tri-lobed creature, its protruding feelers and antennules twitching spasmodically with anticipation.
地球上的大洋曾经到处都是类似于马蹄蟹的生物-三叶虫。
The earth's oceans were once filled with horse shoe crab-like critters called trilobites.
大部分在古生代岩层中发现的化石都是没有脊骨的无脊椎动物，例如珊瑚、软体动物和三叶虫。
Most of the fossils seen in Paleozoic rocks are invertebrate animals lacking backbones, such as corals, mollusks and trilobites.
她珍爱与车独处的时间，安享带来路边三叶草甜蜜芳香的微风。
She cherished her time in the car alone, reaching into the wind for roadside stalks of fragrant sweet clover.
但是，后者的配方中还有一些额外的成分，比如西梅汁和三叶草。
However, Jacobs's list has extra ingredients such as prune juice and clover.
用来推销三叶草绿色奶昔的奇特小船，在三月期间庆祝圣帕·特里克节。
Unique boat promoted Shamrock green shakes during March to celebrate St. Patrick's Day.
但是只要世界变得更潮湿，富有的沿海城市就更可能选择海洋建筑和三叶虫一样的海上交通工具。
But the more watery the world gets, the more likely its rich coastal cities will start transferring themselves into floating homes and Trilobis-like home vehicles.
更不相信什么四片叶子的幸运三叶草，以及幸运便士。
And when it comes to things like lucky four-leaf clovers and lucky pennies, I just never believed in them.
例如，1519年10月，巴布尔和朋友骑马去Istalif：“草坪是三叶草形的，石榴树镀上了秋天的金黄色，果实全红。”
In October 1519, for instance, Babur rode out to Istalif with friends: “Its lawns were one sheet of trefoil; its pomegranate trees yellowed to autumn splendour, their fruit full red.”
当Bryant检测样品中的花粉时却发现了三叶草和野花花粉的数量远远超过了少量的黑莓花粉。
When Bryant concluded his examination of the pollen in this sample he found clover and wildflowers clearly outnumbering a smattering of grains of blackberry pollen.
我感谢他们全部和其他人，因为他们以自己的方式帮助并保持三叶草的绿色！
My thanks to all of them and others for assisting in their own way to keep Cloverleaf green!
我感谢他们全部和其他人，因为他们以自己的方式帮助并保持三叶草的绿色！
My thanks to all of them and others for assisting in their own way to keep Cloverleaf green!
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