door opener

短语

开门器；破门器；开门机

词形变化

door openers 复数 door openers

释义与例句

n.
  1. 1.

    The control mechanism by which a door is latched and unlatched.

  2. 2.

    Any of various devices designed to make opening a door easier.

  3. 3.

    Any of various devices designed to make opening a door easier.

    Any of various devices to automatically open a door in response to a sensor or signal sent from a controller.

  4. 4.

    Any of various devices designed to make opening a door easier.

    A crowbar-like tool used by firefighters to quickly force locked doors to open.

    政治
  5. 5.

    Someone who opens doors.

  6. 6.

    Any tactic, approach, or giveaway item employed by a salesman to capture the interest of a potential customer.

  7. 7.

    A communication technique designed to encourage someone to speak openly.

  8. 8.

    Someone or something that provides someone with opportunities that would otherwise be unavailable to them.

词源

(sales): Compare get one's foot in the door.

来源：wiktionary