可一而不可再 kě yī ér bù kě zài

DEFINITIONS

  1. may be done once and once only
  2. just this once

CHARACTERS

可 kě
HSK 2
may, can, -able; possibly
一 yī
HSK 1
one; a, an; alone
而 ér
HSK 3
and; and then; and yet; but
不 bù
HSK 1
no, not; un-; negative prefix
可 kě
HSK 2
may, can, -able; possibly
再 zài
HSK 1
again, twice, re-