Beginnings英国起源(22)-英语听力

[00:02.195]This is the sort of wall the Romans built at Dover.
这便是罗马人在多佛所筑的城墙。 [00:08.443]This is Portchester, a Roman shore fort, a truly colossal structure that makes all too clear the scale of threat the Romans felt the barbarians posed.
这是切斯特港、罗马海滨堡垒，这庞然巨物使得罗马人对蛮族入侵的惧怕，不言自明。 [00:21.688]Inside it, lies a Norman castle, built a thousand years later and now completely dwarfed by it.
内部构造与一千年后的诺曼第城堡相似，而与外城相比，却如此矮小。 [00:31.197]It was one of several such forts strung out along the southern and eastern coasts.
这是并肩严守着东南海岸的堡垒之一。 [00:39.443]But not even fortifications like those of Portchester or Hadrian's Wall in the north, could work without adequate troops.
但即使像切斯特港这样的防御工事，或北部横亘的哈德良长城。若无与之匹配的军队，都难以发挥作用。 [00:47.441]As more and more legionaries were sucked back to fight for Rome on the continent,
由于大批罗马兵团被召回欧洲大陆作战， [00:51.447]and as Picts and Saxons spotting the weakness, started raids of their own from the north and east,
而皮克特人与撒克逊人趁其羸弱之时，开始分别从东北方向刺探敌情， [00:57.692]Britannia couldn't help but feel the chill of vulnerability.
不列颠尼亚自知危若累卵。