These Swap Free Prop Firms Have A Hidden Cost Traders Often Miss
"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.
The Great Prop Swap - San Diego | Props, Costuming Goods, and Sci- Fi ...
