介词 - 材料介词和来源介词

used to indicate the substance or source from which something is made or composed

used to indicate the material that is used for a purpose

used to show what something is made of or composed of

used to indicate the material that something is made of

used to indicate the origin or nationality of a person

used to specify the source or origin of something

used to indicate a transformation or alteration from one state or condition to another

used to indicate a transition or progression from one state or condition to another

used to specify the substance or material from which something is constructed or made

used to express a shift or alteration in a state, condition, or situation

于