A：May, is this the Hall of Ancient China?
梅，這是古代中國館嗎?
B：Yes. Look at these historical relics here, amazing!
是啊。看這些文物，真令人驚嘆!
A：Why are they all in glass boxes?
為什么它們都被裝在玻璃盒里呢?
B：For protection. Some relics will turn to dust if exposed to air.
為了保護它們啊。—些文物暴露在空氣中就會變成粉末。
A：So there isn't air in the glass boxes?
那玻璃盒中就沒有空氣了?
B：No, there isn't. There is a vacuum in every box.
沒有。它們都是真空的。
A：I wonder how old these things are. Thousands of years?
真不知這些東西有多古老，幾千年?
B：Yeah, they all come from a very ancient time.
是啊，它們都是來自古代。
A：Hey, look at the tripod. I've seen it on TV.
嘿，看這個鼎。我在電視上看到過。
B：It was made 4,000 years ago. It's priceless!
4000年前的青銅鼎。這可是無價之寶!
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