That mother bird—we might call her Mrs. Thrush—is not very good at math. So when she returns to sit on her eggs, she doesn’t notice there is an extra large egg in the nest.
那个鸟妈妈——我们不妨称呼她画眉鸟夫人——的数学非常不好,因此当她回来再次坐在她的蛋宝宝身上时,她并没有注意到她的窝里额外多了一个大个头的蛋。
Notably, the snake populations studied all give birth to live young (other species like pythons, lay eggs) and are sit-and-wait predators, making them more vulnerable to change in their environments.
值得注意的是,接受数量考察的都是卵胎生种类(另外一些种类,比如蟒蛇,则是卵生)以及静候捕猎的种类,这会让他们更容易受到环境变化带来的影响。
In the first she placed carrots, in the second she placed eggs, and in the last she placed ground coffee beans. She let them sit and boil; without saying a word.
在第一个罐子里,母亲放进去胡萝卜,第二个放了鸡蛋,第三个罐子放了一些磨好的咖啡豆。她让水继续烧开,一言不发。
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