花叶病是分布最广泛的甘蔗病害之一.Mosaic is one of the most widely distributed sugarcane diseases.病毒病常分为几大类,即花叶病, 黄化病, 斑驳或条斑.Viruses are often classified into broad categories as mosaics , yellows, mottles, and streaks.玉米矮花叶病是世界普遍发生危害严重的...
口试后，我私下里与那位考生谈了谈。I spoke privately to the candidate after the oral.法语口试和笔试a test of both oral and written French上那所大学不必经过口试.No oral test will be required for admission to that university....