2、霸王龙即雷克斯暴龙（Tyrannosaurus Rex），生存于白垩纪末期的马斯特里赫特期(MAA)距今约6850万年到6500万年的白垩纪最末期，是白垩纪-第三纪灭绝事件前最后的非鸟类的恐龙种类之一。化石分布于北美洲的美国与加拿大，是最晚灭绝的恐龙之一。
霸王龙的英语：tyrannosaurus，读音是【[tirænəˈsɔ:rəs]】,词性是名词。双语例句
有新证据证明霸王龙可能会自相残杀。Tyrannosaurus Rex may have
been
a
cannibal, new evidence suggests.
霸王龙早就以残食其他恐龙闻名于世，但是新发现的化石表明这种大型食肉动物也会残食同类.....
Tyrannosaurus rex is
well
known for eating other dinosaurs, but new fossils reveal these bigcarnivores ate each
other too..
如今，大家都相信在电影《侏罗纪公园》中的两位超级大明星--霸王龙和速龙--这样的超级肉食动物就是例外，他们并不符合这个法则。
They now believe super-carnivores, such
as tyrannosaurus
rex and velociraptor -
the two starsof the Jurassic Park movies
-
were the exception rather
than the rule.
之前的想法一直是，在霸王龙形成庞大体型的进化过程中，它们需要调整全身骨骼的大小，以便能够适应食肉动物的行动。
The thinking has
been that as tyrannosaurs developed
to
a truly giant size, they needed
tomodify their entire skeleton so they could function
as predators.
过去的一年里，发现了六个新霸王龙物种。而在过去的十年里所知道的霸王龙种类是之前的两倍多。
But
in the
past year
half
a dozen new tyrannosaur species have
been
described, and during the
past decade the known diversity of tyrannosaurs has more than doubled.
