Zea mays L. var. indurata Sturt.

例句：

1. 1. The corn fields are a sight to behold.
   玉米田是一道美丽的风景。
2. 2. Corn is a staple food for many people in the United States.
   玉米是美国许多人的主要粮食。
3. 3. Corn is a good source of protein and fiber.
   玉米是一种良好的蛋白质和纤维来源。