was, on the contrary,

反而却是过去的
the first condition of existence for all earlier industrial classes.

一切工业阶级生存的首要条件
Constant revolutionizing of production,

生产的不断变革
uninterrupted disturbance of all social conditions,

一切社会状况不停的动荡
everlasting uncertainty and agitation,

永远的不安定和变动
distinguishes the bourgeois epoch from all earlier ones.

是资产阶级时代不同于过去时代的地方
All fixed, fast-frozen relations, with their train of

一切固定的僵化的关系以及与之相适应的
ancient and venerable prejudices and opinions, are swept away.

之前被尊崇的观念和见解都被消除了
All new-formed ones become antiquated before they can ossify.

一切新形成的关系等不到固定好就陈旧了
All that is solid melts into air;

一切等级的和固定的东西都烟消云散了
all that is holy, is profaned;

一切神圣的东西都被亵渎了
and man is at last compelled to face,

人们终于不得不用冷静的眼光