1. mark in/out around the clip, export
2. copy multiple clips to new browser bin, batch export
not sure about the renders in this second case, so...
3. copy your sequence, put the copy in a new bin
in the copy, go thru and select rendered clips,
option+C to NEST these rendered clips
give them an appropriate name
when you've nested all you need,
gather them up in the browser, (in the new bin, as nests appear in same browser location as the originating seq)
and batch export.
i use this last method when we want to export smaller sections from a large, rendered timeline.
nick