leach material造句

例句与造句

1. The theories of compilation about teaching material are always the weak link of curriculum research . at present , we have n ' t the theory systems and practical theory data that can guide the leaching material ' s compilation
   教材编制理论一直是课程研究领域的薄弱的环节，就目前来看，缺少用以指导教材编制的较为系统和实用的理论资料。
2. It's difficult to find leach material in a sentence. 用leach material造句挺难的