dye

染料、染劑

She mixed the blue dye in a large plastic bucket.

她在一個大塑膠桶裡調和藍色染料。

色素多指食品或化妝品

The candy contains artificial dyes and too much sugar.

這種糖果含有人工色素和過多的糖。

染、染色

She dyed her hair bright red before the concert.

她在演唱會前把頭髮染成鮮紅色。

上色、吃色

This kind of cotton dyes evenly and never fades.

這種棉布上色均勻，而且不會褪色。