- But even at their size,
即便体型如此庞大 - they can never let down their guard...
也绝不能放松戒备 - ...for they aren't the only giants of the Jurassic.
因为它们不是侏罗纪时代唯一的巨兽 - Allosaurus.
异特龙 - Nearly nine meters long...
将近九米长 - it's one of the largest predators on land in these early days of the dinosaurs' reign.
是恐龙统治时代早期 最大的陆上捕食者之一 - It probes for opportunity.
它在寻找时机