1N-UNCOUNT (金属、塑料等的)管子,管材Piping is metal, plastic, or another substance made in the shape of a pipe or tube. (金属、塑料等的)管子,管材
...rolls of bright yellow plastic piping.
成卷的明黄色塑料管
2N-UNCOUNT (衣服、垫子等的)滚边Piping is cloth made into a narrow tube. Piping is used to decorate the edges of clothing and things such as cushions. (衣服、垫子等的)滚边
The red dress had slim black piping around the neck.
这条红裙的领口有细细的黑色滚边。
3ADJ [ADJ n]尖声的;高声的 A piping voice is high-pitched. 尖声的;高声的 [written]
As she was about to follow there came a piping voice from upstairs. 'Is that Daddy back?'