What Are These Bumps On My Knees And Are They Dangerous To Health

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What Are These Bumps On My Knees And Are They Dangerous To Health

"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.

What are these small bumps on my knee? I've had them for a few months ...

I have these bumps on my fingers that form every so often, but I have ...