"I've looked at this picture very often but I'd never really noticed this shadow before," he suddenly said, pointing to a patch of burnt umber near the elbow.

“这张画我看过好多次，但从没注意过这一块阴影。”他突然说，并指出画中手肘处的一块棕色焦痕。

youdao

But in you second picture, the system you using now must see some trouble if you want in chinese. So you can try install you system again and look for some third patch .

个人建议如果可以不用英文系统，还是安装个中文系统， 如果一定要用英文系统，应该找到干净原版的。

youdao

This is a picture of patch clamp, it's a device that engineers built to fasten onto individual cells in order to look at how molecules in the membrane of the cell are working, and I'll talk a little bit about that as we go along.

这是膜片钳的图片,工程师使用该装置固定单个细胞,由此观察,细胞膜中的分子怎样活动,在以后的课中我还会谈到这方面内容

耶鲁公开课 - 生物医学工程探索课程节选