It says the words probably came from the sport of boxing, or prizefighting. The book says the saying began because a competitor's face was cleaned with a cloth towel or other material.
这本词典说，这句短语可能起源于拳击，这种说法来自于拳击手用毛巾或其他东西擦脸。
2
The material used for thangkas is linen cloth or cotton fabric;
唐卡的原料是亚麻布或棉织品；
3
Its physical model is based-on deep understanding of clothmaterial property that differs from rubbers and other elastic materials.