再试一下。

Try again.

Source: Tatoeba

Sentence Composition

1 再 zài
  1. again; once more; re-
  2. further; beyond this point of time
  3. (before an adjective) more
  4. then (after sth, and not until then)
  5. no matter how ... (followed by an adjective or verb, and then (usually) 也 yě or 都 dōu for emphasis)
  6. (used to introduce additional information, as in 再则 zàizé, 再就是 zàijiùshì etc)
  7. (literary) to reappear; to reoccur
2 试 shì
  1. to test
  2. to try
  3. experiment
  4. examination
  5. test
3 一下 yīxià
  1. (after a verb) a bit; a little (indicating brief duration, or softening the tone, or suggesting giving sth a try)
  2. all at once; suddenly