The trousers have double thickness knee panels for extra protection.
这条裤子上有双倍厚的护膝片以加强保护。
《牛津词典》
2
To ease the chronic knee pain syndrome, knee proprioception upgrade, play the role of protection, thermal effect.
能缓和膝部的慢性疼痛病证，提升肘部本体感觉，起到防护的作用，保暖效果好。
3
Contraction both materials can be tailored to provide thermal effect of the knee joint, improved proprioception of the knee, played the role of the most basic protection.