So every year, on the same day -- and it's a mystery exactly how that happens -- each colony sends out its virgin, unmated queens with wings, and the males, and they all fly to a common place. And they mate.
所以每年，并在同一天——很神奇每年都是这同一天—— 每个蚁群都会派出有翅膀的没有交配过的蚁后，还有雄蚁， 它们飞到一个共同的地方交配。