N a synthetic fibre, consisting of long-chain polyamides, having high tensile strength and temperate resistance 凯夫拉尔; 聚醯胺纤维 [trademark]
You want to tighten up the kevlar, OK?
你应该穿防弹衣的,好吗?
The polymer was a chemical product that formed the basis for Kevlar.
这种聚合物是一种形成凯拉夫尔主要成分的化学产品。
Kevlar might not have been invented had Stephanie Kwolek been able to seek a career in medicine.
VOA: special.2010.02.09
Kevlar is a fibrous material with qualities that make it able to reject bullets.
VOA: special.2011.03.01
The polymer was a chemical product that formed the basis for Kevlar.
VOA: special.2010.02.09
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