Ron is not the brainiest boy in the whole world .

罗恩不是世界上最聪明的孩子。

Are you the brainiest of them all ?

你是所有这些智商较高？

The other is that part , but not all , of the historic difference between the brainiest men and women has vanished .

另一个结论就是，在智商较高的男子与女子之间的历史差异已经消失了部分，还不是全部。

The complex machine is difficult for even the brainiest of scientists to wrap their heads around .

即使，对最聪明的科学家而言，理解缠绕在他们脑袋中的这部复杂机器也是困难的。