您只要按一下按钮。

You have only to touch the button.

Source: Tatoeba

Sentence Composition

1 您 nín you (courteous, as opposed to informal 你 nǐ)
2 只要 zhǐyào so long as; provided; if
3 按 àn
  1. to press
  2. to push
  3. to leave aside or shelve
  4. to control
  5. to restrain
  6. to keep one's hand on
  7. to check or refer to
  8. according to
  9. in the light of
  10. (of an editor or author) to make a comment
4 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
5 按钮 ànniǔ
  1. to push a button
  2. button (one that can be pressed to trigger an action)