1.By contrast, the biggest mammal that ever walked on land was the hornless rhinoceros known as Paraceratherium.

相比之下，曾经在陆地上行走过的最大的哺乳动物被称为 Paraceratherium 的无角犀牛。机翻

2.Some male tunnelers avoid the fray by masquerading as hornless females and sneaking into tunnels to mate while the guardians' heads are turned.

一些雄性挖道蜣会扮成无角雌蜣来避免争斗，并在守卫蜣意时，悄悄溜通道行交配。

3.But there were abundant remains of one species of dinosaur from the same fossil formation: Protoceratops, a small, hornless ceratopsian.

，一化石地层中有一种恐龙的大量遗骸：原角龙，一种小型无角角龙。机翻

4.Earlier this year, Jamie Campion, who is 41, and her husband, Jeff, bought two Southdown Babydoll sheep from a local breeder near their home in Thompson's Station, Tennessee.

今年早些时候，41岁的杰米·坎皮恩和她的丈夫杰夫，从田纳西州汤普森站家附近的一位当地饲养员那里买了两只无角短毛娃娃羊。

5.Some places are so desperate to protect their rhinos that they will tranquilize them and carefully remove their horns in the hope that poachers will leave these hornless rhinos alone.

有些地方为了保护犀牛，孤一掷，他们会麻醉犀牛，然后小心翼翼地取走犀牛角，希望偷猎者能放过这些无角犀牛。