let down

['letdaun]

v.放下, 使…失望, 松懈, 把(衣服)放长, 披散, 放气

例句与用法：

That's a real let down.

这真叫人失望。

The girl let down her hair.

女孩让头发披了下来。

Let down a rope so that I can climb up.

放下绳子，让我爬上去。

She let down the blind.

她把百叶窗放下了。

详细释义：

使失望

Don't worry. I'll never let you down.

别担心。我决不会让你失望的。