他们是黄色用英文怎么说

"They are yellow" is the Engpsh equivalent of "他们是黄色的" in Chinese.

The word "yellow" comes from Old Engpsh "geolu," which is derived from the Proto-Germanic "gelwaz" and the Proto-Indo-European root "ghel-," which means "to shine," "to gleam," or "to be yellow."

Here are some example sentences using the word "yellow" in Engpsh:

The sunflower petals are bright yellow. (这朵向日葵的花瓣是鲜黄色的。)
My favorite color is yellow. (我最喜欢的颜色是黄色的。)
The leaves on the trees turn yellow in the fall. (树叶在秋天变成黄色。)
The taxi was yellow. (出租车是黄色的。)
The banana was yellow and ripe. (香蕉是黄色的，已经熟了。)