We need Nolyester and Nylon poy multifilament yarn(only substandard -b-c grade-offgrade-No a grade) for our ropes production.是什么意思_We need Nolyester and Nylon poy multifilament yarn(only substandard -b-c grade-offgrade-No a grade) for our ropes production.在线翻译_英语_读音_用法_例句