The United States Forest Service soon had trees planted in some areas and a rough road system built.

VOA: special.2009.07.20

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

So in the suburbs with some trees and green, I really love that.

所以我很喜欢长有树木和绿色植物的郊区。

怡人的的汉普斯特德 - SpeakingMax英语口语达人

Some areas of Joshua Tree National Park in California, for example, can no longer support the trees that the park is named for.

VOA: special.2009.09.28

In back,playing among pine trees I once surprised some wild turkeys.

VOA: special.2010.01.30