I feel an upsurge of rippling blue downs, active thinking.

碧波荡漾让我心潮起伏，思想活跃。

youdao

I suppose it has most resembled a blue-chip stock: fairly stable, more ups than downs, and gradually trending upwards over time.

我觉得它最像是一直蓝筹股：相当稳定，大多数时候上涨少有跌宕，并随着时间的推移逐渐呈上涨趋势。

youdao

Today's is a dark blue snail-shell, spiralled and chequered with paler blue and purple, picked up somewhere on the Downs.

今天的这个是我在英国南部威尔特郡的白垩山丘捡到的一个深蓝色的蜗牛壳，上面有呈螺旋状的，淡青色和紫色交叠着的花纹。

youdao

Mr Jones, from Rogerstone, who still watches the Blue Square South team home and away, has seen many ups and downs in the past 85 years.

BBC: Loyal support of football fan, 91