Most pollen that causes hay fever for us is from plants that use the wind to disseminate the pollen, and that's a very inefficient process, which is why it gets up our noses so much.
多数会导致我们患上花粉热的花粉 来自那些用风来 传播花粉的植物。 这是个非常低效的过程， 这也是为什么花粉总是跑到我们鼻子里。