They run red lights. It's dangerous. And the cops don't do anything.

他们闯红灯。这太危险了。警察却站着什么事也不做。

I get so upset 实战 - SpeakingMax英语口语达人

Once you get that, once you get the value, "Christmas tree," as opposed to "red lights," "red lights" being perhaps a part of some Christmas trees, then you see that you're back in a semiotic system and a very obvious one, because a Christmas tree is a not-menorah, not-Kwanzaa candles.

一旦认识到这点，红灯，指的其实是圣诞树“,红灯是圣诞树的一部分，那么你会发现你回到了符号学的解释中，圣诞树不用于犹太教或者非洲人的节日。

耶鲁公开课 - 文学理论导论课程节选