Because their two sets of wings effectively flap as one, that in theory gives them little control over the aerodynamic forces on their body.

因为它们的两副翅膀叠在一起，在空气动力学的理论中，这意味着它们对自己身体缺乏控制力。

youdao

The core idea in my own theory of the emergence of collectively autocatalytic sets is simple and involves what is called a phase transition in a "random graph".

我自己的关于集体自催化系出现的理论的核心思想很简单，涉及到在所谓的“随机图”里的阶段过渡。

youdao

The argument I've just presented is a famous one in the theory of infinite sets.

这是属于无限集理论中一个著名的论题。

youdao

In theory it sets him above the tawdry goings-on of daily politics (indeed, it makes him look presidential), while leaving Mr Chirac's reputation to be stained by every new leak from the judiciary.

ECONOMIST: France��s official sleaze