biennial crop

例句：

1. 1. The biennial crop of wheat is harvested in the spring.
   小麦的双年生作物在春天收获。
2. 2.This region has a rich biodiversity that supports a variety of perennial crops.
   这个地区拥有丰富的生物多样性，支持着多种多年生作物。
3. 3.The farmers carefully cultivated the perennial crops for their long-term benefits.
   农民们精心培育这些多年生作物以获得长期的利益。