Effective methods to identify natural colored cotton from dyed cotton have not been found.

现在对天然彩色棉和染色棉没有很好的鉴别方法。

youdao

The results showed that the scratch resistance of metallic effect coatings was better than that of natural colored coatings.

实验结果表明，金属闪光系汽车涂层抗划伤能力优于本色系汽车涂层。

youdao

The color and luster of natural colored cotton is formed in growth course of fiber, so its color fastness is different in different conditions.

由于天然彩棉的色泽是在纤维生长过程中形成的，其色牢度在不同的条件下有所不同。

youdao

Wear light colored clothing made of natural materials.

VOA: special.2010.07.27

It's usually colored because there's food dye in it, but it wouldn't be colored in its natural state.

通常是五颜六色的,因为其中含食用色素,但在自然情况下,它是无色的

耶鲁公开课 - 生物医学工程探索课程节选

The awards honor, recognize and promote designers whose work uses natural colored gemstones and cultured pearls in finished fine jewelry design.

FORBES: Award Winning Jewelry Designs

Launched in 1984, the annual natural colored gemstone and cultured pearl jewelry design competition is considered by many to be the most respected and prestigious creative award for the jewelry design industry.

FORBES: Award Winning Jewelry Designs

The competition is founded and hosted by the A merican Gem Trade Association, an organization of United States and Canadian trade professionals that promote the long-term stability and integrity of the natural colored gemstone and cultured pearl industries.

FORBES: Award Winning Jewelry Designs