Now before I invite you to join in a discussion in this second part of the seminar,
现在，在我邀请你们进入到讨论会的第二个阶段前，
I'd like to make some very important points about our fieldwork - and in fact any field trip to look at rockart.
我希望就我们的野外工作提出几点重要的看法，事实上是任何石刻艺术的实地考察。
We're going to a number of sites, and we won't always be together.
我们将参观许多景点，但是我们不总是在一起。
The single largest problem faced by people who manage the sites is - yes, I'm sure you've guessed - damage caused by bisitors, even though it's usually unintentional.
我想你们也能猜到，景点管理者面临的最大问题是参观者带来的破坏，即使通常不是故意损坏的。
Whenever you do go to a site, don't forget you can learn many things from observing at a distance instead ofwalking all over it.
无论你什么时候到一个景点，别忘了你可以通过在远处观察学到很多事情，而不是走近它。
This can really help to reduce visitor pressure.
这有助于减轻游客的压力。
People often say, 'Well, there's only two of us and just this one time', but maybe thousands of people are saying the same thing.
人们经常说“只有我们两个人，就这一次”。但是也许成千上万的人都会说同样的话。
And then some basic rules to guide you - we'll have our own camp near a village, but remember never to camp on a site if you go on your own.
之后有一些你们要遵守的基本原则，我们将在村庄附近露营，但是如果你一个人去的话，不要在景点露营。
It may be disrespectful to the people of that culture, and certainly don't make fires, however romantic it may seem.
这也许对那里的人很无礼，另外一定不要生火，即使这看起来很浪漫。
It's really dangerous in dry areas, and you can easily burn priceless undiscovered material by doing so.
这在干燥的地区很危险，而且你可能因此轻易烧毁了未发现的无价之宝。