These Hospital And Medical Supplies Are Now Being 3d Printed

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These Hospital And Medical Supplies Are Now Being 3d Printed

"those / these" are determiners and are used before nouns to refer to a particular group of things / people, e.g. these people / those rules / those buildings. Update: 题主问的是What are those? 然后他.

Home and Hospital Medical Supplies and Services, Inc. - Don't forget ...

Hospital Medical Supplies Clipart Set Download - Clipart 4 School