come about

动词verb

1. 1intransitiveTo come to pass; to develop; to occur; to take place; to happen; to exist.
2. 2(intransitive, nautical) To tack; to change tack; to maneuver the bow of a sailing vessel across the wind so that the wind changes from one side of the vessel to the other; to position a boat with respect to the wind after tacking. See also come to.
3. 3intransitiveTo change; to come round.