The find has stirred excitement among those working to restore the American chestnut, and raised hopes that scientists might be able to use the pollen to breed hardier chestnut trees.

• 这项发现给致力于恢复美国花生树的人们带来欢欣鼓舞,重新燃起了希望,希望科学家们能利用这些树的花粉培育更健壮的花生树。