波音之前曾希望在787客机所采用的塑料技术应用成熟后，推出一款以此技术为基础的新型单行通道客机。

Boeing had been hoping to hold off until it could offer an all-new single-aisle aircraft, based on the 787's plastic technology.

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作为对40年工作年限的回报，它已经同意提高工资水平，养老金就是以此工资水平为基础计算的。

In return for 40 years of contributions, it has agreed among other things to increase pay grades on which pension benefits are calculated.

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他说：“多数适应都是以此前的结构为基础。”

"Most adaptations are built from previous structures," he says.

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Machiavelli uses these two psychological and even in some ways quasi-medical terms, humors, to designate two classes of people on which every society is based.

马基雅维利运用这两个心理学上的,甚至某种程度上准医学的术语，人民特质，来界定两种不同阶级的人,每个社会都以此为基础。

耶鲁公开课 - 政治哲学导论课程节选

And then you can build on that, your vocabulary.

然后你可以以此为基础，巩固你的词汇。

语法和语调是关键 - SpeakingMax英语口语达人

So, on the basis of this, Socrates proposes how to proceed Kallipolis with the construction of Kallipolis, and he does so through what he calls three waves.

以此为基础，苏格拉底提议,如何着手建立，他的作法是,透过他所谓的三波。

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