plant quarantine certificate

例句：

1. 1.The company requires all imported plants to have a plant quarantine certificate before they can be sold.
   该公司要求所有进口的植物在销售前必须持有植物检疫证书。
2. 2. The farmer was required to provide a plant quarantine certificate for the new seeds he was selling.
   农民被要求提供一份植物检疫证书，以证明他出售的新种子是安全的。
3. 3. The government issued a new plant quarantine certificate, which made it easier for farmers to grow certain crops.
   政府发布了新的植物检疫证书，使农民更容易种植某些作物。