We now know that juvenile tyrannosaurs were much slimmer and lightly built than the adults, with arms slightly more in proportion with the rest of their body.

我们知道，幼年霸王龙比成年霸王龙更瘦，体格也更小，这时小前爪就和它身体其余部分更协调。

The great breast and heavy fore legs were no more than in proportion with the rest of the body, where the muscles showed in tight rolls underneath the skin.

宽阔的胸脯和粗壮的前腿与身体的其他部位构成了极匀称的比例，浑身上下的肌肉结结实实，在皮毛下显得滚圆滚圆的。