In his new novel, "Solar", the focus is global warming.
《太阳》是他新出版的小说，焦点放在了全球变暖问题上。
The principle of solar energy: focus on a focal point to produce heat.
⊙、太阳能的原理：集中在一个焦点上才能产生热。
The focus of this research is for renewable solar energy.
本文研究的可再生能源为太阳能。
The focus of this research is for renewable solar energy.
本文研究的可再生能源为太阳能。
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