The two size each other up. 两只霸王龙互相打量着对方

314. is Tyrannosaurus rex.
     是霸王龙
315. But he's not alone.
     但它并不孤单
316. Another T. rex.
     又一只霸王龙
317. The two size each other up.
     两只霸王龙互相打量着对方
318. Tyrannosaurs will often fight for territory...
     霸王龙经常会为领地而战
319. and are not above cannibalism.
     并且不会拒绝同类相食
320. But there's something else on this male's mind...
     但这只雄龙还有其它念头

来自《我们星球上的生命 第一季 第五集 Life on Our Planet S01E05 巨兽阴影下》第 317 行