But Alfred had deduced that the Danes were no longer fit for prolonged battle:

然而，阿尔弗雷德断定，丹麦人已不再适应持久的战争，

with their fellow scientists either in other countries or in universities,

和其他国家、其他大学同行们

Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.

因为蛇有毒液不是用来对付人的，而是对付它的猎物，诸如鼠类，毒液对这些猎物会立刻起作用。

Apparently what happened was that water collected on these tar pits, and the bigger animals like the elephants ventured out on to the apparently firm surface to drink, and were promptly bogged in the tar.

沥青坑里积存了水，大象那样的大动物冒险到似乎坚固的水面上去饮水，立即掉进了沥青坑。

easily obtainable from the lunar rocks in the form of liquid oxygen.

从月球上的岩石中很容易提炼出液态氧，

for it produces a resentful animal who at a later stage may well turn man-killer.

因为这种方法训练会使动物反感，在以后某个时期可能会变成伤人的动物。