Creative ideas not only produce their own instruments of survival as time and circumstances demand, but permit the substitution of new forms for old under the pressure of changed circumstances.

创造性的思想不仅随着时间和环境的需要产生自己的生存工具，而且允许在已变化环境的压力下用新的形式代替旧的形式。

youdao

In my experience a straight substitution of carob for chocolate doesn't work.

以我的经验，角豆直接代替巧克力不会奏效。

《柯林斯英汉双解大词典》

One is the acceleration of the substitution of knowledge and capital for manual labor.

一是知识和手工资本的替代加速。

youdao

It's the same desire for some kind of sacrificial substitution that, I think, is fueling the poem's ending.

这和为诗歌最后的结尾火上浇油的，牺牲性的替代是毫无差别的。

耶鲁公开课 - 弥尔顿课程节选

This is a meditation on both the joy and the loss of literary substitution for the real or for the truth, the substitution of abstract pattern for something like comprehensible meaning.

对为了现实或是真理,和有着某些可理解含义的抽象模式，的文学替代的思考,在这里她有些被这宝石般的线索吸引住了。

耶鲁公开课 - 1945年后的美国小说课程节选

This would put stocks and bonds on an equal footing and slow the substitution of debt for equity.

FORBES: How The Government Subsidizes Leveraged Takeovers

Ongoing investigations, spanning many countries, are currently examining whether the substitution of beef for horsemeat was not accidental but the work of a criminal conspiracy.

BBC: Horsemeat scandal to be reviewed, government announces

And he adds that there is ongoing substitution of tablets for PCs, while Microsoft and its partners are not up to scale on Win 8-based tabs and hybrids.

FORBES: Microsoft: Nomura Trims Ests On Soft Win 8 Debut