You might wonder: Isn't denim made of cotton, a natural material?

你可能会想：牛仔布不是由棉花这种天然材料制成的吗？

youdao

The Food and Drug Administration requires that natural flavors come from a natural material, but that's a broad category.

食品和药物管理局要求天然风味需来自天然的材料，但它是个很广义的分类。

youdao

All the interior furniture is designed atypically by IO Studio. We use only natural material, natural oak natural leather and steel.

所有室内家具由IO工作室量身打造。我们只使用天然材料、天然橡木、天然皮革和钢材。

youdao

To make that genome, the researchers replaced all the natural genetic material in a bacterial cell with a synthetic set of genes.

VOA: special.2010.07.20

and I really liked, you know, the material and I felt like I had the natural ability for it,

我很喜欢课堂上接触到的那些会计知识，而且我感觉我在这方面有天赋。

为什么是会计学呢？ - SpeakingMax英语口语达人

And we've structured our own store where each vendor, which out of nine hundred I've only got currently about ten approved, that are willing to allow their material to be inspected, allow their growth facility to be inspected and be verified organic or natural growing techniques.

VOA: special.2010.10.11

It's essential, in order for consumers to embrace a fabric, that it look like wool, silk or another natural material, Mr. Kriemler says.

WSJ: Polyester Is Back in Style at Alexander Wang, Talbot Runhof, Akris

Their 70, 000-gene chromosomes have been manipulated to include a gene from the orb weaver, a palm-size spider that spins the world's toughest natural material.

FORBES: Charlotte's Goat

Earlier the inquiry at Lymington Town Hall heard that Wightlink had agreed with Natural England that material dredged from the river would be used to replenish Boiler Marsh, a natural habitat in Lymington Harbour.

BBC: Agreement over new Wightlink ferry terminal