- 失去；丧失：
Many people lost their jobs because of the economic depression.
由于经济萧条，许多人失业了。
She lost her eyesight at 19 months.
她19个月的时候就失明了。
- 丢失，遗失，找不到：
I have lost my dictionary.
我的词典丢了。
- 错过；未赶上；未抓住；未得到：
They lost the bargain.
他们没能成交。
to lose one's chance
错过机会
They lost the last bus.
他们错过了末班车。
- 白费，浪费；耽搁：
Be quick, not a moment to be lost!
快点，一刻也不能耽搁。
- 使丧失，使失去；使失败：
I don't know what had lost her her job.
我不知道是什么使她丢掉了工作。
The delay lost them the battle.
延误使他们战败。
- (比赛、赌博等)输去，输掉，未赢得：
The host team lost the football game.
主队踢输了足球赛。
He lost the bet.
他赌输了。
One careless move loses the whole game.
一着不慎，满盘皆输。
- 损失；亏损；使损失：
They lost a large sum of money on that project.
他们在那个项目上损失了一大笔钱。
- [常用被动语态]使毁灭；使毁坏；使丧失；使崩溃；使…失踪：
Two ships were lost in the storm.
两艘船在这场暴风雨中遇难。
- 看不见；听不见；使…迷糊：
She lost her son in the crowd.
她在人群中看不见她儿子了。
We didn't lose a word of his speech.
我们听清了他的每一句话。
- 使(自己)迷路；走失；使迷糊不清：
They lost themselves in the strange city.
他们在陌生的城市里迷了路。
- [lose oneself][常用于被动语态]使(自己)全神贯注；使(自己)专心于；使沉湎于：
He soon lost himself in a best-seller.
他不久就专心地读着一本畅销小说了。
- (赛跑时)胜过；超过；领先于；将…甩开：
He lost the other runners from the very beginning of the race.
他从比赛一开始就将其他选手甩到后面去了。
- 降低；减少：
to lose speed
减速
- (钟、表等)走慢；慢(…时间)：
The clock is losing 5 minutes a day.
这个钟每天慢五分钟。
- 未能保持；不能维持；不能控制；失去:
to lose one's balance
失去身体平衡
to lose one's temper
动怒，大发脾气
- 摆脱，脱离；(由于控制力等)不再有：
The little girl has lost her fear of the dark.
小姑娘不再害怕黑暗了。
to lose unwanted weight
摆脱讨厌的重压
to lose a cold
祛除感冒
- (医生)未能保住(病人的)生命；未能治愈(病人)
- (产妇)小产；流产；生死胎