1. The bar codes on the products are read by lasers. 产品上的条形码是用激光读取的。
2. The Irvine group and their collaborators are testing whether lasers do the job better. 欧文小组和他们的合作者们正在测试是否用激光更好。
3. Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers. 奥尔教授已经研发出了用现有的实验室激光给化学分子贴标签的有趣方法。
4. The parts of the enterprise which are scientifically the most exciting are unlikely to be militarily useful. I am thinking here of the development of new kinds of lasers. 这份计划中，从科学角度看最让人兴奋的部分在军事上却可能无用。我指的是新型激光开发。
5. As the color of red and white lasers deepens, so does laser energy consumption rise, which becomes a disadvantage. 随着红色和白色激光颜色加深，激光耗能也在攀升，这就成为一个劣势。
