不幸的是, 引起疾病的病原仍不明了.Unfortunately, the responsible pathogens were still unknown.感病的植物群体不暴露在它们的病原之下,这是相当普遍的.Nonexposure of susceptible plant populations to their pathogens is fairly common.在此情况下,需要特异性实验来确定病原.In such situati...
短毛猎犬一阵狂吠。The Doberman let out a string of roaring barks.那只狗兴奋地狂吠着向女主人跑去。Barking deliriously, the dog bounded towards his mistress.狗又在狂吠。The dog growled again....
The coded signal is received by satellite dish aerials.编码信号由碟形卫星天线接收。The contents are emptied into color-coded buckets.东西都被倒进不同颜色的桶里。The map is colour-coded and easy to follow.这张地图有色标，很容易看懂。...