One piece at a time
English: by the piece, one by one
one_by_oneEnglish
one by one, by the piece, individually, on an individual basis, one after another
Adverb
Apart from others
English: individually, separately, singly, severally, one by one, on an individual basis
Bahasa: tersendiri, sendiri-sendiri
In single file
English: one by one, one after another, one at a time
Bahasa: bertubi-tubi