It was strange to me why we were not allowed to buy rice, flour and sugar without these little blue, orange and yellow tokens.

当时我觉得很奇怪，如果没有这些蓝色、橙色和黄色的代币券，为什么就不能买米、面粉和糖呢？

youdao

Orange and yellow foods such as carrots, sweet potatoes and yellow peppers get their color from carotenoids, compounds that boost the immune system.

橙色和黄色的食物身上的颜色，如胡萝卜，红薯和黄色辣椒都来自于类胡萝卜素，一种能增强免疫系统功能的化合物。

youdao

The animation uses a "hot metal" colour scale that begins at dark red and progresses through orange and yellow to white at the highest levels of activity.

影片里用色线标出了活动等级：由深红开始，逐步过渡桔红，再到黄色，进而显成白色这一最高等级。

youdao

Their colors are bright red, orange and yellow.

VOA: special.2009.04.15

You find that the graphs for the men and the women, the orange and the yellow lines look pretty much the same, so there don't appear to be any gender interactions until you get out here, and that's a pretty small segment of the population.

图中黄色线代表男性,橙色线代表女性,两条线相当接近,除此之外,性别之间没有太大差异,这部分人群总体并不多

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Yellow and orange colors fill the sky at this hour and are reflected in the water.

VOA: special.2009.08.19

"We were up on a second floor balcony and the sky lit up in orange and yellow, " he said.

CNN: SHARE THIS

The force said the move from three orange and yellow stripes to yellow and blue checks would increase visibility.

BBC: Met Police cars to have Battenburg livery

Walking along the trailside, annoyed at my cold, wet mission, I suddenly noticed a profusion of orange and yellow bell-shaped blooms growing on dwarf rhododendron bushes.

BBC: Hunting the blue Yeti of Bhutan