1. unheralded a.  未预先通知的,  未预先警告过的

He came and went during these months, arriving unheralded and leaving without saying good-by.
在这几个月里，他经常来来去去，来时不预先通报，去时也不说再见。

2. ignore v.  忽视, 不理

If you ignore your diet, trouble will follow.
如果你忽视自己的饮食，必然会遇到麻烦。

3. prejudice n.  偏见, 伤害

A new law has been brought in to discourage racial prejudice.
一项反对种族歧视的新法律已被提出。

4. inject v.  注射, 注入

The nurse injected penicillin into her arm.
护士给她的胳膊注射了青霉素。

5. holocaust n.   大屠杀,  浩劫

I know this sounds like preparations for a nuclear holocaust, but the effects could be horrifyingly similar.
我知道这听起来一定像是为核浩劫提前准备，但其结果其实都挺恐怖的。