1. A spearhead of tanks led the infantry attack.
    坦克先遣队引导步兵进攻。

2. A man looked out from his apartment and gave a description of the killer's second attack.
    有个男人从他的公寓里看到了街上的情景，还描述了凶手第二次袭击时的情形。

3. And security: how to make such a big target attack-proof.
    并且还有安全问题：如何才能令这样大的一个目标免遭攻击。

4. Medical science faces the challenge of conquering the many diseases which still attack human beings.
    医学界面临着征服那些侵害人体的多种疾病的挑战。

5. 2. Why did the robber get a bit of an anxiety attack now?
    我们把手放了下来，可我仍站在原地没有动。接着一个银行职员按下了柜台后面的按钮，银行前面的保险门便自动合上，把我们锁在了里面。我们就原地不动，直到三、四分钟以后警察赶到。

6. Conservative spiritual leaders have claimed that cloning a human constitutes a gross attack on human dignity.
    保守派的宗教领袖宣称，克隆人类是对人类尊严的一次重大挑战。

7. Our orders are to attack their left flank.
    我们的命令是攻击他们的左翼.

8. It immediately ran away when she saw it, and experts confirmed that a puma will not attack a human being unless it is cornered.
    她刚看见它，它就立刻逃走了。专家证实，美洲狮非被逼得走投无路，是决不会伤人的。

9. For more than half an hour 38 respectable Brooklyn, New York citizens watched a man attack and stab (刺杀) a woman three separate times.
    在半个多小时的时间里，纽约布鲁克林区38名体面的居民旁观了一名男子三次袭击并最终刺死一名女子的过程。