燃气发动机是所有热机中最完美的,因为它结合了蒸汽机和内燃机的优点。
The meaning of a word is its use in the language.
To me, you are still nothing more than a little boy who is just like a hundred thousand other little boys. And I have no need of you. And you, on your part, have no need of me. To you, I am nothing more than a fox like a hundred thousand other foxes.