sign onverb

• 1

  To join something, after signing.

• 2

  To commit oneself, as to a project, a goal, an organization, a cause.

  • I never signed on for this.
  • By January of 1996 President Clinton himself had apparently signed on with his declaration in the State of the Union message that "the era of big government is over."
• 3

  broadcastingmediaTo begin broadcasting a radio or television signal, usually at the beginning of a broadcasting day and after being off the air for several hours.

  • Years ago, the TV station would sign on at 5 a.m., but now it broadcasts 24 hours a day.
• 4

  To log on; to start using a computer, radio, or other multicast device; to start talking.

  • Edward ran a pale hand through his perfect golden-bronze hair, then signed on to 4chan.org, the darkest place on the Internet, where all his vampire compatriots spent their time.
• 5

  To apply to receive unemployment benefits.

  • Oh, one thing led to another; you know. I just sort of faffed around — I just did odd jobs; and sometimes in between I signed on.

這個拼法也被記錄為下列字的變化形：

• sign-on