The adults close ranks around their young, presenting a wall of blubber and hide.

但成象围成圈保护小象，构成了一堵坚固脂肪皮墙。

We've recently been able to use some new technology through MRI imaging to see for the first time what is actually happening inside the joint when someone pops or cracks their knuckles.

最近通过磁共振成象技第一次看到了当人掰响他指关节时，指关节内部到底发生了什么。

Or you can go into the scanner, the FMRI, and there, the blood flow, the oxygen indicates again changes in the configuration of the brain as it takes in this new stimulus.

或者你可以描仪，也就是功能性磁共振成象，血流和氧气也会显示大脑结构在接收新刺激时变化。