The word 此时 is formed by directly combining two fundamental conceptual characters: 此, which means "this" and points to something immediately present or proximate, and 时, which means "time" or "moment". Their combination is a straightforward, logical fusion where the demonstrative "this" specifies and anchors the abstract concept of "time", creating the composite meaning of "this time" or "at this moment". It is a conceptual compound where the first element modifies and defines the scope of the second, building a single unit of meaning from two concrete ideas.