adj.迷路的；丢失的；错过的；失败的；不知所措的；摧毁的；被杀死的；忘我的；不能理解的

动词lose的过去式和过去分词形式

The lost man yelled, hoping someone in the woods could hear him. 迷路的人大声喊叫着,希望林子里有人能听见。

He is hunting for his lost book. 他正在寻找一本丢失的书。

There is nothing we can do about it. It's a lost cause. 我们已经无能为力了,它是注定要失败的。

Nothing was the same any more. I felt lost. 一切都变了,我感到手足无措。

The group is working to preserve old buildings that could otherwise be lost. 这个组织致力于保护古建筑,以使其避免被摧毁的命运。

We cried for those lost in the battle. 我们为那些在战争中丧生的人哭泣。

The girls were lost in the music. 那些女孩子完全沉浸在音乐中了。

I was completely lost after the first paragragh. 看完第一段,我就完全不知所云了。