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第1段
1 .<-NARRATOR:-> Now listen to part of a lecture from a biology class.
请听生物课上的部分内容。
第2段
1 .<-MALE PROFESSOR:-> There is a large tropical insect called the Peanut Bug, yes like the peanuts that you eat.
有一种很大的热带昆虫，叫做花生蝽。对，就像你吃的花生一样。
2 .Um and the peanut bug's front wings are colored so that they blend in with their surroundings.
这种花生蝽前翅是有颜色的，所以它们能和周围的环境融为一体。
3 .But its back wings, which are usually closed and hidden, have these bright colorful spots on them and when the peanut bug's attacked, it suddenly opens its back wings and out pop these big bright colors.
不过它的后翅通常都是收拢并隐藏起来的，在后翅上有许多颜色鲜明的斑点。当花生蝽受到攻击时，它会突然张开后翅，亮出那些鲜明的颜色。
4 .And that surprises the predator and gives the peanut bug a chance to get away.
这种行为会让进攻者吓一跳，给花生蝽争取到逃跑的机会。
5 .Um and then you have a butterfly called the morpho Butterfly, and parts of the morpho butterfly's wings are very shiny.
另一个例子就是一种叫做大闪蝶的蝴蝶。大闪蝶翅膀上有些部分非常耀眼，
6 .They reflect a lot of sunlight.
能够折射大量阳光。
7 .When this butterfly is resting, this shiny part of its wings is hidden.
这种蝴蝶休息的时候，其翅膀上耀眼的部分就会隐藏起来。
8 .Now morpho butterflies are often attacked by birds.
大闪蝶经常会被鸟类攻击。
9 .So when a bird approaches, the morpho flies away.
所以一旦有鸟类接近，它们就会飞走。
10 .And when the morph flaps its wings, all the bird can see are flashes of light reflected from the morpho's wings.
大闪蝶拍打翅膀时，鸟类只能看见从蝴蝶翅膀上折射出的一缕缕光线。
11 .Those flashes of light make it very difficult for the bird to follow the morpho, and the morpho is usually able to get away.
这些光线使得鸟类很难跟上大闪蝶。所以大闪蝶通常都能逃脱。