priceless
adj
1 too valuable to be priced 无价的; 极其贵重的
priceless jewels, paintings, treasures, etc 极其贵重的首饰、 画、 珍宝等
(fig 比喻) Her one priceless asset is her unflappability. 她有一点是非常难能可贵的, 就是她遇事冷静. =>Usage at invaluable 用法见invaluable.
2 (infml 口) very amusing or absurd 非常有趣的; 十分荒唐的
a priceless joke 非常有趣的笑话
You look absolutely priceless in that hat! 你戴著那顶帽子很滑稽!