Orders for new planes here are encouraging for commercial aviation, but with countries across Europe announcing cuts in defense spending, the future for military aviation does not look as bright.

VOA: standard.2010.07.23

The reason being, again, computers are not very bright.

你们也知道的，电脑很笨的。

哈佛公开课 - 计算机科学课程节选

I try to look on the bright side. I try to not be a downer.

我试着乐观一点。试着不去做一个扫兴的人。

幸福的定义 - SpeakingMax英语口语达人