He adds: "in theory, you could have a plug-in hybrid with a renewable fuel powered [internal combustion engine] and eliminate the need for petroleum all together."
他还称：“理论上讲，你可以在使用可再生燃料的引擎上增加一个混合插件，这样可以彻底不使用汽油。”
2
Abstract Hybrid orbital theory is an important content of inorganic chemistry and structural chemistry in college text book, and it is the basis for further study of element compounds.
摘要杂化轨道理论是大学无机化学、结构化学课程的重要内容，是后续元素化合物学习的基础。
3
According tot the content of text book, this article written about some understanding of hybrid orbital theory.