A：May, is this the Hall of Ancient China?
梅，这是古代中国馆吗?
B：Yes. Look at these historical relics here, amazing!
是啊。看这些文物，真令人惊叹!
A：Why are they all in glass boxes?
为什么它们都被装在玻璃盒里呢?
B：For protection. Some relics will turn to dust if exposed to air.
为了保护它们啊。—些文物暴露在空气中就会变成粉末。
A：So there isn't air in the glass boxes?
那玻璃盒中就没有空气了?
B：No, there isn't. There is a vacuum in every box.
没有。它们都是真空的。
A：I wonder how old these things are. Thousands of years?
真不知这些东西有多古老，几千年?
B：Yeah, they all come from a very ancient time.
是啊，它们都是来自古代。
A：Hey, look at the tripod. I've seen it on TV.
嘿，看这个鼎。我在电视上看到过。
B：It was made 4,000 years ago. It's priceless!
4000年前的青铜鼎。这可是无价之宝!
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