It becomes alien from them.

于是这又产生了异化
That's the point. Right? The product.

产生异化的关键是生产
Well then you are also becoming alien in the act of production.

并且生产行为本身也会产生异化
He said because labor is external to the worker--

他说对工人而言劳动是受到外界的驱使
there are different points in this--external to the worker;

外界的驱使人们对此有各种不同的观点
it does not belong to his intrinsic nature.

他认为劳动并非出自工人的内心
In his work he does not affirm himself but denies himself--

工作中他们的自身价值并非被肯定而是被否定
does not freely develop itself.

无法自由发展
You know, you say,

如现在有人会说
"Well it's already 4:45.

"现在已经四点四十五分了
I have only fifteen more minutes to go

我只需要再坚持十五分钟左右
and then I am free." right?

就可离开教室走人啦"