例句與造句

1. The course of development of epdm composite coloured shingle is described with focus on its main materials and self - stick layer
   本文介紹了epdm復合彩瓦的研制過程，并對其中的主體材料和自粘層作了詳細的論述。
2. It's difficult to find composite colour in a sentence. 用composite colour造句挺難的