骡子不能生小骡儿，所以生活的唯一目标就是工作、工作、再工作。

Mules cannot have baby mules, so their only purpose in life is to work, work, and work some more.

youdao

“好吧，比利，”他说，“我听说‘老头帽’农场的牧羊犬要生小崽了。

"Well, Billy, " he said, "I heard that Old Man Hatfield's collie is going to have pups.

youdao

朱兰，朱兰花一种朱兰属陆生小兰花，生长在北温带，开粉色或微白的花。

Any of various small terrestrial orchids of the genus pogo nia of the north temperate zone having pink or whitish flowers.

youdao

And so he said, if you start off with a male and a female, at the end of one month they have an offspring. Let's assume they have two offspring. At the end of the next month let's assume those offspring have offspring. Again a male and female.

在13世纪的时候想要计算兔子的数量,就是一个月大的兔子,再过一个月就可以进行交配,所以它说如果你一开始有一公一母两只兔子,在一个月末它们就可以生小兔子,让我们假设它们生了两只小兔子。

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