克漏字翻译20151224

下面一段短文中，有两处系以中文呈现，请利用上下文线索（如单字、词组等）将其译成正确、通顺、达意且前后连贯的英文。

Yawning is one of the strangest parts of our lives. We have no control over it, and it doesn't seem to serve any real purpose. Yawning does, however, give us a burst of energy and makes us more alert. 1. 另一个常见的看法是，人们会在无聊时打呵欠。 Also, it can happen when we are very excited. For example, athletes often yawn before a competition. Thus, many different feelings can result in yawning.

Scientists are baffled by yawning. There is one thing that they do know for sure, though. Studies show that 55 out of 100 people will yawn after someone nearby does. 2. 科学家相信早期人类用打呵欠当作在群体中保持警觉的工具。 If certain members were tired, they would yawn, triggering others to do the same. As a result, the whole group could prevent themselves from falling asleep and protect each other from danger. Nowadays, we don't need this group protection, but we are still sharing yawns.

参考中译

打呵欠是我们生活中最奇怪的部分之一。我们无法控制这个动作，而且打呵欠似乎起不了任何实际的作用。然而，打呵欠确实能为我们带来一阵突如其来的活力，也能使我们更加警觉。另一个常见的看法是，人们会在无聊时打呵欠。此外，我们觉得非常兴奋时也会打呵欠。举例来说，运动员常在比赛前打呵欠。所以，许多不同的情绪都会导致人们打呵欠。

科学家对于打呵欠百思不得其解。然而，只有一件事是可以肯定的。研究显示，当在附近的人打呵欠后，1百个人当中会有 55 个人也会跟着打呵欠。科学家相信早期人类用打呵欠当作在群体中保持警觉的工具。如果某些成员累了，他们会打呵欠，引发其他成员也这么做。如此一来，整个团体里的人都能防止自己睡着，并且互相保护免于危险。如今，我们不需要这种团体保护，但我们仍继续分享彼此的呵欠。

1.和一般认知不同的是，那个国家已不再是战区。（提示：用 Contrary to popular belief,...）

2.我们被警告在机场可能会发生恐怖攻击。（提示：用 alert sb to sth）

3. Nancy 从脚踏车上摔下来时，安全帽保护她免于伤到头部。（提示：用 protect A from B）

参考译句

   1.  Contrary to popular belief, that country is no longer a war zone.

   2.  We were alerted to the possibility of a terrorist attack at the airport.

   3.  The helmet protected Nancy from hurting her head when she fell off her bicycle.