raise the per unit yield

例句：

1. 1. The company aims to raise its profits by 20% next year.
   该公司计划明年将其利润提高20%。
2. 2. The teacher raised her voice to emphasize the point.
   老师提高了声音来强调这个观点。
3. 3. The farmer raised a large vegetable garden on his land.
   农民在他的土地上种植了一个大型的蔬菜园。