lost

1. Lost is the past tense and past participle of . (lose)的过去式和过去分词

2. ADJ If you are lost or if you get lost, you do not know where you are or are unable to find your way. 迷路的

Barely had I set foot in the street when I realized I was lost. 我刚走上那条街就发现自己迷路了。

3. ADJ If something is lost, or gets lost, you cannot find it, for example, because you have forgotten where you put it. 丢失的

...a lost book. …一本丢失的书。

He was scrabbling for his pen, which had got lost somewhere under the sheets of paper. 他当时正在翻找钢笔，那支笔在纸堆下的某个地方找不到了。

4. ADJ If you feel lost, you feel very uncomfortable because you are in an unfamiliar situation. 迷惘的

Of the funeral he remembered only the cold, the waiting, and feeling very lost. 有关那次葬礼，他只记得当时很冷，等了很长时间，而且感到很迷惘。

5. ADJ If you describe something as lost, you mean that you no longer have it or it no longer exists. 失去的; 不复存在的

...their lost homeland. …他们失去的家园。

The sense of community is lost. 团体意识没有了。

6. ADJ You use lost to refer to a period or state of affairs that existed in the past and no longer exists. (时间或事件) 逝去的[ADJ n]

He seemed to pine for his lost youth. 他似乎在怀念他逝去的青春。

They are links to a lost age. 他们是连接一个逝去年代的纽带。

7. ADJ If something is lost, it is not used properly and is considered wasted. 浪费的

Smith is not bitter about the lost opportunity to compete in the games. 史密斯没有因为错过参赛机会而痛苦。