Chad, Lake
- a shallow lake on the borders of Chad, Niger, and Nigeria in north central Africa. Its size varies seasonally from c.10,360 sq. km (4,000 sq. miles) to c.25,900 sq. km (10,000 sq. miles).乍得湖（中非洲北部乍得、尼日尔和尼日利亚交界处的浅湖, 湖面大小根据季节在约 10,360平方公里, 即4,000平方英里至约25,900平方公里, 即10,000平方英里之间变化）。