1. Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system.
    有些铁离子随汗液流失。另外，由于某些未知的原因，高强度的耐力运动有时是与消化系统内出血联系在一起的。

2. Many young people were so interested in the football game that they lost sight of time.
    许多青年人对足球赛非常感兴趣，常常忘了时间。

3. Mendoza met Humphries in the ring on a later occasion and he lost for a second time.
    后来，门多萨与汉弗莱斯再次在拳击场上较量，门多萨又输了一场。

4. Meanwhile, his unit was lost and all records of him had been destroyed.
    与此同时，他所在部队被击溃，他的所有档案材料全部毁于战火。

5. Caesar then decreed that the year should consist of 365 days, but every fourth year an extra day should be inserted at the end of February to make up for the quarter days that were lost.
    恺撒然后颁布命令，规定一年由365天组成，但每隔四年必须在2月底加一天，以补偿每年失去的1/4天。

6. But two days later, during a rough storm, the two ships temporarily lost sight of each other.
    可是，两天以后，一场暴风雨使两艘船一时间失散了。

7. "You surely have lost your senses.
    你们真糊涂。

8. "Well, I lost it."
    “嗯，我把它弄丢了。”

9. Oh, we all have friends we can tell important things to, people we can call to say we lost our job or fell on a slippery floor and broke our arm.
    噢，我们都有朋友，可以把大事要事向他们倾诉。我们可以打电话对他们说我们丢了工作，或者说我们在湿滑的地板上摔倒了，跌断了胳膊。

10. Little Hans lost his way.
    小汉斯迷了路，