seasonallyadv.季节性地seasonaladj.季节的；依照季节的；周期性的seasonal forecast季节预报seasonal dynamics季节性动态seasonal rhinitis季节性鼻炎, 枯草热Seasonal dormancy季节性休眠seasonalisolation季节隔离seasonal changing季节变化seasonal delivery季节交货seasonal breeding季节性繁殖seasonal recovery季节性恢复seasonal discount季节折扣