kain

例句：

1. 1. The ancient city of Uruk was known for its gold mines.
   古代城市乌鲁克以其金矿而闻名。
2. 2. The gold medal was awarded to the winner of the marathon.
   马拉松赛跑的金牌被授予了冠军。
3. 3. Gold is often used as a symbol of wealth and prestige.
   黄金常常作为财富和地位的象征。