动词短语
中文翻译：购买并兑换黄金
同义词：
['purchase', 'exchange', 'buy', 'purchase', 'convert', 'exchange for']
例句：
-
1. She decided to buy and change her old watch for a new one.
她决定买一个新的手表来替换她的旧表。
-
2.The bank offered to exchange his old currency for new ones.
银行愿意用他的旧货币换新币。
-
3.He bought the gold bars and then exchanged them for cash at the local pawn shop.
他买了金条，然后在当地的当铺换成现金。