He noticed at once that discipline was slack: the Danes had the self-confidence of conquerors, and their security precautions were casual.

他马上发现纪律松弛，他们以征服者居，安全措施马马虎虎。

He found their entire army living in careless security, and so he determined to make a sudden and bold attack on them, to try and rid his country once more of these cruel invaders.

他发现队纪律松弛，因此决定对他们采取大胆的突袭，把这些残酷的侵略者赶出英格兰。