double³ n 1 [C,U] something that is twice the size, quantity, value, or strength of something else 两倍，双倍: I sold my old bike for ￡50 but I should have asked for double. 我把自己的旧自行车卖了 50 英镑，但是我应该要双倍价的。 2 sb's double someone who looks very similar to someone else 与某人极为相似的人