Zea mays L.

例句：

1. 1.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。
2. 2.The corn plants are tall and have long ears.
   玉米植株高大，有长长的耳朵。
3. 3.Corn is used to make ethanol, which is used in fuel.
   玉米用来制造乙醇，用于燃料。