我介绍一下。

Let me introduce it.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 介绍 jièshào
  1. to introduce (sb to sb)
  2. to give a presentation
  3. to present (sb for a job etc)
  4. introduction
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