These Tiny Tracking Devices For Animals Can Last For Ten Years

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These Tiny Tracking Devices For Animals Can Last For Ten Years

"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.

Tracking Devices

Top 10 Best Tiny GPS Tracking Devices to Find Kids, Car, Keys and Pets