人们生产生活资料的方式首先取决于他们发现并必须再生产的实际手段的性质。
The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.
Education is the foundation upon which sustainable forestry is built.
"The past is never dead. It's not even past."
I'm the reason your ears won't hear.
