halogen family

例句：

1. 1. The halogen lamps are more energy-efficient than incandescent bulbs.
   卤素灯比白炽灯泡更节能。
2. 2. Halogen gases are used in the production of many different chemicals.
   卤素气体用于生产许多不同的化学物质。
3. 3. The halogen flame is a bright, blue light that can be seen from a distance.
   卤素火焰是一种明亮的蓝色光，可以从远处看见。