1. Does it mean we should give up our attempts at finding ET? 这是否意味着我们应该放弃寻找外星人的尝试呢？
2. "I can't look at a picture of him without thinking ET," she wrote recently. “我一看到他的照片就没法不想起外星人。”她最近这么写道。
3. Even if ET has mastered building a rocket that can travel at the speed of light, he may be lying dead inside a weakened craft . 即使外星人已经掌握了制造一枚能以光速飞行的火箭的技术，他也可能死在了一架飞船里。
4. British scientist Stephen Hawking is worried that any extraterrestrial life we find is likely to be a creature out of the movie Predator, not ET. 英国科学家斯蒂芬·霍金担心，我们发现的任何外星生命更可能是电影《铁血战士》而不是《ET外星人》里的生物。
5. Clayton et al. developed criteria to test for episodic memory in animals. Clayton 等人制定了测试动物情景记忆的标准。
