即使是一个瘦形梁龙，曾经被认为在活着的时候重达5.5吨，现在也减重了1.5吨。
Even a slender diplodocus, once believed to have tipped the scales at five and a half tonnes when alive, has lost a tonne and a half from its weight.
除了一个姓梁的小女孩偶尔会和他一起玩阿龙没有其他的朋友。
He doesn't have any friends except a girl surnamed Liang who now seldom comes to play with him.
结果，历经数百万年间的自然选择，形成了我们今日熟知的异特龙、梁龙、三角龙和霸王龙族群。
The result, once natural selection had done its work over the course of millions of years, was the now familiar cast of Allosaurus, Diplodocus, Triceratops and Tyrannosaurus rex.
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