let in 1. 允许进入；漏水 let in a flood of light 放进一大片强光 He let them in by a side door. 他让他们从边门进入。 This would let in all sorts of evils. 这会使各种罪恶乘虚而入。 This pair of boots is letting in badly. 这双靴子漏得厉害。 2. 让…知情；允许…参加 3. 使遭受损失；使陷入；惹起 I was badly let in over that business. 我在那桩生意上大受损失。 4. 镶嵌 5. 把(衣服)改窄 Your dress needs letting in at the waist. 你这条连衣裙腰部需要改窄些。