ph.

打错电话

健康与健身

1. one piece at a time

e.g. she sold the plates by the piece

Synonym: by the piece

2. apart from others

e.g. taken individually, the rooms were, in fact, square
the fine points are treated singly

Synonym: individuallyseparatelysinglyseverallyon an individual basis

3. in single file

e.g. the prisoners came out one by one

Synonym: one after anotherone at a time