means specific propellant consumption

例句：

1. 1. The book means a lot to me.
   这本书对我来说意义重大。
2. 2. He meant to go but changed his mind.
   他本打算去，但改变了主意。
3. 3. She meant well, but her actions were inappropriate.
   她本意是好的，但她的行为是不恰当的。