PTE写作SWT预测：Flying ability of dandelion seeds

在PTE考试中，写作中的SWT拿分并不容易，需要掌握技巧，多练习预测和预测，今天就给同学们带来羊驼老师讲解的STW预测题：Flying ability of dandelion seeds.快来跟随老师的脚步一起学习这篇文章吧！

一、原文：

The extraordinary flying ability of dandelion seeds is possible thanks to a form of flight that has not been seen before in nature, research has revealed. The discovery, which confirms the common plant among the natural world's best fliers, shows that movement of air around and within its parachute-shaped bundle of bristles enables seeds to travel great distances --often a kilometer or more, kept afloat entirely by wind power. Researchers from the University of Edinburgh carried out experiments to better understand why dandelion seeds fly so well, despite their parachute structure being largely made up of empty space. Their study revealed that a ring-shaped air bubble forms as air moves through the bristles, enhancing the drag that slows each seed's descent to the ground. This newly found form of air bubble --which the scientists have named the separated vortex ring --is physically detached from the bristles and is stabilized by air flowing through it. The amount of air flowing through, which is critical for keeping the bubble stable and directly above the seed in flight, is precisely controlled by the spacing of the bristles. This flight mechanism of the bristly parachute underpins the seeds' steady flight. It is four times more efficient than what is possible with conventional parachute design, according to the research. Researchers suggest that the dandelion's porous parachute might inspire the development of small-scale drones that require little or no power consumption. Such drones could be useful for remote sensing or air pollution monitoring.

二、翻译：

研究表明，蒲公英种子的非凡飞行能力之所以成为可能，要归功于自然界中一种前所末有的飞行形式。这一发现证实了这种普通植物是自然界中最擅长飞行的植物之一，它的降落伞状刚毛束周围和内部的空气运动使种子能够传播很远的距离——通常是一公里或更多，完全靠风力保持漂浮。爱丁堡大学的研究人员进行了实验，以更好地理解蒲公英种子为什么能飞得这么好，尽管它们的降落伞结构主要是由空空间组成的。他们的研究表明，当空气通过刷毛时，会形成一个环形气泡，增强阻力，减缓每颗种子落到地面的速度。这种新发现的气泡形式——科学家们将其命名为分离的涡流环——与刷毛在物理上分离，并通过流经它的空气保持稳定。通过的空气量对保持气泡的稳定和种子的正上方飞行至关重要，它由刷毛的间距精确控制。这种刚毛状降落伞的飞行机制支撑着种子的稳定飞行。根据研究，它的效率是传统降落伞设计的四倍。

研究人员认为，蒲公英的多孔降落伞可能会激发小型无人机的开发，这种无人机只需要很少或不需要电力消耗。这种无人机可用于遥感或空气污染监测。

三、答案参考：

Sample answer

The extraordinary flying ability of dandelion seeds is possible thanks to a form of flight that has not been seen before in nature, and a ring-shaped air bubble forms as air moves through the bristles, enhancing the drag that slows each seed's descent to the ground, and the dandelion's porous parachute might inspire the development of small-scale drones that require little or no power consumption.（65 words）

四、解析：

1、文章标题flying ability of deadline。dandelion的意思是蒲公英，seed种子，蒲公英的种子。

2、文章没有分段，先看段首和段尾，有没有值得关注的重点。

3、先看段首：像“The extraordinary flying ability”飞行能力这样的形容词，可以暂时先不管，后面的“researchers has revealed”，研究者已经发现了、已经揭开了这个谜底的面纱。说明第一句话是非常重要的，表明研究者的发现。即使没有看懂这篇文章，也要把这句话加入答案中。

4、再看段尾：“such drone could be useful”，drone是无人机的意思，是什么样的drone呢？我们继续往前面看，有一个“researchers suggest”，研究者们建议，说明后面又是一个结论性的句子，这个句子我们也要加上。

5、总结这篇文章运用的技巧就是不用读懂全文，根据开头结尾加在句子中的一些信号词辅助我们找到重点句子。

6、接着往下看“their study review that”,他们的研究揭露了什么，然后“researchers suggest that”，我们掐头去尾，把从句的不重要的部分删掉，剩下的就是这四个比较重要的部分，把它们放进你的答案中即可。

综上所述，这篇SWT文章就学习到这里，同学们可以根据老师的指导和技巧多加练习，运用到今后的PTE写作中去，取得一个好成绩！