let down

US /let daʊn/
UK /let daʊn/
"let down" picture
1.

使失望, 辜负

to disappoint someone by failing to do what they expect or hope

:
I promised to help him, and I don't want to let him down.
我答应帮他,不想让他失望
She felt completely let down by her friends.
她感到被朋友们彻底辜负了
2.

放下, 降低

to lower something or allow it to fall

:
Can you let down the blinds, please? The sun is too bright.
请你把百叶窗放下来好吗?阳光太刺眼了。
She decided to let down her hair after the formal event.
正式活动结束后,她决定放下头发。