dispersal
n. 分散;传播;散布;疏散;消失
例句
I can imagine that seed dispersal might be a factor.
我觉得种子传播可能是一个因素。
Plant species dependent solely on seeds for survival or dispersal are obviously more vulnerable to any decrease in plant fecundity that occurs.
显然,仅依靠种子生存或传播的植物物种更容易受到植物繁殖力下降的影响。
The structure of cycads male cones is quite consistent with the wind dispersal of pollen, clouds of which are released from some of the larger cones.
苏铁雄球果的结构与花粉的风传播相当一致,花粉云从一些较大的球果中释放出来。