solar tracking water heater

例句：

1. 1. Ournew solar-tracking water heater ismore energy-efficient than the old one.
   我们的新太阳能追踪式热水器比旧的更节能。
2. 2. The solar-tracking waterheater has a unique design that makes iteasy to install and maintain.
   太阳能追踪式热水器设计独特，安装和维护都很方便。
3. 3. Solar-tracking water heaters are becomingincreasingly popular as people seek to reduce theircarbon footprint.
   随着人们寻求减少碳足迹，太阳能追踪式热水器越来越受欢迎。