評論
打印
Using the examples of the peanut bug and the morpho butterfly, explain the concept of revealing coloration.
請以花生蝽和大閃蝶為例，解釋說明保護色的概念。
Read the passage about Revealing Coloration from a Biology textbook.
請閱讀這篇選自生物學課本的關于保護色的文章。
You have 45 seconds to read the passage. Begin reading now.
你有45秒的時間閱讀文章內容。現在開始計時。
Now listen to part of a lecture from a biology class.
請聽生物課上的部分內容。
There's a large tropical insect called the Peanut Bug.
有一種很大的熱帶昆蟲，叫做花生蝽。
Yes, like the peanuts that you eat.
對，就像你吃的花生一樣。
Um, and the Peanut Bugs' front wings are colored so that they blend in with their surroundings.
這種花生蝽前翅是有顏色的，所以它們能和周圍的環境融為一體。
But its back wings, which are usually closed and hidden, have these bright colorful spots on them.
不過它的后翅通常都是收攏并隱藏起來的，在后翅上有許多顏色鮮明的斑點。
And when the Peanut Bugs are attacked, it suddenly opens its back wings and out pop these bright colors.
當花生蝽受到攻擊時，它會突然張開后翅，亮出那些鮮明的顏色。
And that surprises the predator and gives the Peanut Bug a chance to get away.
這種行為會讓進攻者嚇一跳，給花生蝽爭取到逃跑的機會。
Um, then you have a butterfly called the morpho butterfly.
另一個例子就是一種叫做大閃蝶的蝴蝶。
And parts of the morpho butterfly's wings are very shiny. They reflect a lot of sunlight.
大閃蝶翅膀上有些部分非常耀眼，能夠折射大量陽光。
When this butterfly is resting, this shiny part of its wings is hidden.
這種蝴蝶休息的時候，其翅膀上耀眼的部分就會隱藏起來。
Now morpho butterflies are often attacked by birds.
大閃蝶經常會被鳥類攻擊。
So when a bird approaches, the morpho flies away.
所以一旦有鳥類接近，它們就會飛走。
And when the morpho flaps its wings, all the bird can see are flashes of light reflected from the morpho's wings.
大閃蝶拍打翅膀時，鳥類只能看見從蝴蝶翅膀上折射出的一縷縷光線。
Those flashes of light make it very difficult for the bird to follow the morpho.
這些光線使得鳥類很難跟上大閃蝶。
And the morpho is usually able to get away.
所以大閃蝶通常都能逃脫。
