例句與造句

1. An active solar energy system analysis program may be used to optimize the solar pool heating system before it is built.
2. These technologies include  improvement of thermal and acoustic performance, solar shadings, passive solar energy systems, and active solar energy systems .  The main value of this study to future-proofing is not the specific technologies, but rather the concept of working with an existing fa鏰de by overlapping it rather than modifying the existing one.
3. It's difficult to find active solar energy systems in a sentence. 用active solar energy systems造句挺難的