The military says heavy clashes are taking place as troops advance toward a 30-square-kilometer patch of jungle in which the Tamil Tigers are cornered.

VOA: standard.2009.03.17

Well, you could show the baby a green patch, a green patch, a green patch, a green patch; the baby'll get bored, then a red patch.

你可以向婴儿呈现一个绿色色块,将这个绿色色块不停的重复呈现,婴儿便会感到厌倦,然后呈现一个红色色块

耶鲁公开课 - 心理学导论课程节选

More appropriate would be "I'm going through a rough patch now.

更合适的回应是“我正经历不顺。

哈佛公开课 - 幸福课课程节选

Austan Goolsbee spoke on Fox News Sunday: "It is going to be a rough patch not just in the immediate term, but for a little bit of time ".

VOA: standard.2009.06.07

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