These were the tyrannosaurids, the largest of the tyrannosaurs.

这些是霸王龙，最大 的霸王龙。

There was also Alioramus, a smaller tyrannosaurid species with an elongated skull.

还有 Alioramus，一种体型较小的暴龙科物种，头骨较长。

With a maximum length of about 11.5 meters, the creature would've rivaled some tyrannosaurids in size.

这种生物的最大长度约为 11.5 米，其体型可与某些暴龙科相媲美。

For example, the tyrannosaurids outgrew their competition and became apex predators.

例如，霸王龙在竞争中脱颖而出，成为顶级掠食者。

Nevertheless, being big might've given Deinocheirus an edge against potential tyrannosaurid attacks on the Cretaceous floodplains.

然而，体型庞大可能让恐手龙在白垩纪洪泛区抵御暴龙科的潜在攻击时更具优势。

Often times, the mandibles of tyrannosaurids possess smooth-edged lesions, which many paleontologists thought to be bite wounds from fighting with other dinosaurs.

通常，暴龙科动物的下颌骨有边缘光滑的损伤，许多古生物学家认为这是与其他恐龙搏斗造成的咬伤。

This is one of the last small tyrannosaurids and that helps us confine when tyrannosaurids got big and reached some of the sizes that we see at the very end of the Cretaceous.

这是最后仅存的小霸王龙之一，它帮助我们能够确定，霸王龙是在何时变大，何时达到了我们看到的白垩纪末期的恐龙大小。

With so many tyrannosaurids to contend with, some experts have hypothesized that the massive proportions of Deinocheirus might have been an adaptation that helped it fend off would-be predators.

面对如此多的暴龙科动物，一些专家假设，恐手龙的巨大体型可能是一种适应，帮助它抵御潜在的捕食者。