BreakingNews·191020 - 世界上跑得最快的螞蟻，和人類一樣，時速580公里

Scientists have discovered the world's fastest ant. It is the Saharan silver ant. It runs at a speed of just over 3kph, but that is the same ant speed as a human running 580kph. The ant runs 108 times the length of its own body every second. This is quicker than an Olympic 100-meter runner. The world's fastest man, Usain Bolt, ran the 100 meters using 4 strides a second. The Saharan silver ant uses up to 50 strides a second. The scientists say this much movement almost breaks the limits of what is physically possible for a living thing. Each of the ants' feet makes contact with the ground for a very short time. The ants' feet touch the ground for just seven milliseconds before they take the next stride.

科學(xué)家發(fā)現(xiàn)了世界上最快的螞蟻。這就是撒哈拉銀蟻。它以每小時3公里的速度奔跑，但這和人類跑580kph的速度是一樣的。螞蟻每秒鐘跑的距離是自己身體長度的108倍。這比奧運(yùn)會的100米跑還要快。世界上跑得最快的人尤塞恩·博爾特以每秒4步的速度跑完100米。撒哈拉銀蟻一秒鐘走50步?？茖W(xué)家們說，如此多的運(yùn)動幾乎打破了生物在物理上的極限。螞蟻的每只腳與地面接觸的時間都很短。螞蟻的腳接觸地面的時間只有7毫秒，之后它們就會邁出下一步。

The scientists said the Saharan silver ant runs so fast because it lives in the hot desert. The sand can reach temperatures of up to 60 degrees Celsius, so the ant wants to spend as little time as possible with its feet on the scorching ground. Another reason is that if the ants' feet spend a longer time on the sand, they will sink a little and slow the ant down. Professor Harald Wolf wrote about why the ants' feet move so fast. He said: "These features may be related to the sand dune habitat. They could prevent the ants' feet from sinking too deeply into the soft sand." Professor Wolf told CNN: "We knew these ants would be fast, but nobody knew how fast exactly, and how they would achieve that speed."

科學(xué)家們說，撒哈拉銀蟻之所以跑得這么快，是因?yàn)樗鼈兩钤谘谉岬纳衬?。沙子的溫度可以達(dá)到60攝氏度，所以螞蟻想要在灼熱的地面上花盡可能少的時間。另一個原因是，如果螞蟻的腳在沙子上停留的時間更長，它們會下沉一點(diǎn)，讓螞蟻慢下來。哈拉爾德·沃爾夫教授曾寫過螞蟻的腳為什么移動得這么快。他說:“這些特征可能與沙丘棲息地有關(guān)。它們可以防止螞蟻的腳在松軟的沙子里陷得太深。”沃爾夫教授告訴CNN:“我們知道這些螞蟻會很快，但沒有人知道它們到底有多快，以及它們是如何達(dá)到這種速度的。”