Nations in the euro area share a common currency, but not a common financial policy.

VOA: special.2010.02.12

Or if someone makes a mess in a, in a common area, they are expected to clean up that mess.

如果有人把公用区域弄脏了，那他就要负责打扫干净。

有趣的室友们 - SpeakingMax英语口语达人

In my in my area of research, it's common for us to want to process about 100 images a second in order to get real time display. Each image has about a million elements in it. I 've got to process about a half a gig of data a second in order to get anything out of it.

在我们的研究领域内，我们经常要在一秒钟内处理大概,100张图片以获得实时显示,每个图片大概包括了100万像素,因此我必须在1秒内,处理半个G的数据,来获取我想要的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Disputes are especially common in the Pearl River manufacturing area in southeastern China.

VOA: special.2010.06.18