cornual

例句：

1. 1.The corn is ripe for harvest.
   玉米成熟了，可以收割了。
2. 2. She cut the corn off the stalk with a sickle.
   她用镰刀割下了玉米。
3. 3.Corn is a staple food in many parts of the world.
   玉米是世界上许多地方的主要粮食作物。