How These Reusable Ear Plugs Block More Noise Than Disposable Foam

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How These Reusable Ear Plugs Block More Noise Than Disposable Foam

"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.

20Pair Ear Plugs Selling High Foam Anti Noise Plug... – Grandado

Ear Plugs for Sleeping Noise Cancelling, Reusable Ear Protection ...