结构动力学经典教材:The knife is made of metal and wood换一种形式

The knife is made of metal and wood换一种形式 what system of the body is made of the brain,the spinalcord,and the nerves The spoon is beside the knife.是什么意思 请问是the bag is made by leather还是made of leather?? what system of the human body is made up of blood,blood vessels or the heart 桌面上有个文档,删除时提示 "无法删除文档片段 knife is made of"文件正在被另一个人或程序使用 The table is made () wood.A.from B.up C.in D.of A medical team is made up of 30 doctors,___,who have lived in the countrside for 20 years. knife of romance是什么意思? Is a dress made of silk cheaper than（ ）made of cotton？