The school labours under the disadvantage of not having enough textbooks.这所学校苦于课本不足的不利条件.The library didn’t stock zoology textbooks.这家图书馆没有动物学教科书。English textbooks and dictionaries are on sale everywhere.英语教材和词典到处都有卖的。En...
他发觉对着麦克风他很难专心工作。He found it hard to work with a microphone pointing at him.她专心思考面临的一些实际问题。She kept her mind fixed on the practical problems which faced her.成年人很少会专心地看电视。Adults rarely give the television their undivided a...
DZ - active and reactive power grab grab, such as lifting aids.DZ型有功抓斗和无功抓斗等起重辅助设备.The Allophycocyanion ( APC ) was purified from a mutant of spirulina platensis ( SP - Dz ).从钝顶螺旋藻突变株 ( SP-Dz) 中纯化别藻蓝蛋白 ( Allophycocyanion...