Best friends can be silly together.

最好的朋友能傻傻的呆在一起。

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Impossible People and Animals: these can be silly or sublime, depending upon the subject, but almost inevitably result in a confused double-take.

不可能的人和动物——光看这些人和动物，可能有些搞笑或者怪异，但是，人们总是难免会想要对它们多看几眼。

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Stickers can be fun, silly or serious.

表情图可以是有趣的、愚蠢的或严肃的。

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So the strong classical conditioning stories about fetishes and fears sound silly and extreme and they probably are but at the same time classical conditioning can be used at least to shape the focus of our desires and of our interests.

用经典条件作用来解释恋物癖和恐惧,听起来很蠢也很极端,或许是这样,但至少经典条件作用,能够使我们产生,对欲望和兴趣的关注。

耶鲁公开课 - 心理学导论课程节选

The content is breezy and fun, though the brief, au courant English introductions from a young American woman in Paris can be silly.

WSJ: Mobile Apps for Foreign Languages

Possibly, that they just can't be bothered playing our silly games or giving us the satisfaction of discovering the extent of their intelligence.

WSJ: Brian Hare and Vanessa Woods: The Secret Genius of Dogs

Can it be that the IRS investigators were so silly, clueless and unaware of their appropriate role?

CNN: With IRS defanged, politics can run rampant