小秃鼻乌鸦

Of course there ought to be jungle-cats and birds of prey and other agencies of sudden death to add to the illusion of liberty, but the bird's own imagination is capable of inventing those ---- look how a domestic fowl will squawk an alarm note if a rook or wood pigeon passes over its run when it has chickens.

当然，还要有丛林猫和其他猛禽，还要有其他能造成突然死亡的各种力量来增加自由的假象。可是当然了，鸟类自身的想象力也能创造出这些东西来——比如，家养的笨鸡在带小鸡雏时，一发现有秃鼻乌鸦或旅鸽经过它和孩子们经常出没的地方，就会发出尖声警报。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。