请问what materials is it made from?里的from应该加上吗?

what is input?(raw materials) 请问what materials is it made from?里的from应该加上吗? what ---used as chief building materials today -----steel and concrete.c.are are d are is what ---used as chief building materials today -----steel and concrete.c.are are d are is Who is this?What name?Concrete materials and so on.Please tell me what is soil organic materials?Answeer this question in English,please. 请问英语what is The first step is to prepare specifications defining exactly what services or materials are requ...The first step is to prepare specifications defining exactly what services or materials are required.翻译成中文 英语翻译reading furnishes the mind only with materials of knowledge ,it is thinking that makes what we read ours. What are the materials of rigid tube? 请问what you say is what you 请问nothing is what it The skyscraper is made ____ new materials. 英语翻译English learning requires various English language materials beyond what is in the text books.不是翻译哦,是理解,用英文回答的 what are the main characteristics of polymeric materials?Material physics 请问 What is this in English? 请问：what konwledge is of most worth? 请问这段英文想表达什么意思?I was wondering if there is possibility to buy more of one meter of this two materials together?