"放下" 用英语可以表达为 "let go" 或 "let down".
"Let go" 的意思是放弃或放手，常用来指放弃对某事物的控制或所有权。例如：
"I need to let go of my anger and forgive him."（我需要放下怒气，原谅他。）
"She had to let go of her dream and find a more practical job."（她不得不放弃她的梦想，找一份更实际的工作。）
"Let down" 的意思是使某人失望，常用来指有意或无意地使某人失望。例如：
"I was really disappointed when my friend let me down and didn't show up to my party."（当我的朋友未能来我的聚会时，我感到很失望。）
"She felt let down when her boss didn't give her the promotion she was expecting."（当她的老板没有给她想要的晋升时，她感到失望。）
"Let go" 的意思是放弃或放手，常用来指放弃对某事物的控制或所有权。例如：
"I need to let go of my anger and forgive him."（我需要放下怒气，原谅他。）
"She had to let go of her dream and find a more practical job."（她不得不放弃她的梦想，找一份更实际的工作。）
"Let down" 的意思是使某人失望，常用来指有意或无意地使某人失望。例如：
"I was really disappointed when my friend let me down and didn't show up to my party."（当我的朋友未能来我的聚会时，我感到很失望。）
"She felt let down when her boss didn't give her the promotion she was expecting."（当她的老板没有给她想要的晋升时，她感到失望。）