lupin alkaloids

例句：

1. 1. Lupin is an important crop in the region.
   紫花苜蓿是该地区的重要作物。
2. 2. The farmer used lupin to fertilize his fields.
   农民用紫花苜蓿来施肥他的田地。
3. 3. Lupin has many health benefits for humans.
   紫花苜蓿对人类有许多健康益处。