短语讲解：
1. But with prices expected to continue rising, especially if the U.S. debt fight drags on, consumers and gold sellers say sales are going to be affected.
drag on拖延
例句：The war may drag on.
战争可能要拖延下去。
2. “If they cannot cut the spending and be able to increase the debt limit, the problem can become the default, which will lead to a higher pricing in gold," he said.
be able to能,会
例句：Most children are able to walk before they are able to talk.
多数孩子在会说话前就会走路。
lead to导致, 引起
Smoking can lead to lung cancer.
抽烟可能导致肺癌。
3. At least one company sees promise in gold prices: Gold to Go is a German company that sells automatic teller machines that dispense gold bars.
at least至少
例句：He smoked at least half a packet of cigarettes a day.
他每天至少抽半包烟。
4. It says sales are looking up.
look up改善; 好转
例句：Business is looking up.
商业日趋繁荣。
