Lacking self-confidence and maturity, many teenagers are left feeling very vulnerable.许多十几岁的孩子既缺乏自信又不够懂事，所以感情上十分脆弱。Two teenagers burgled the home of Mr Jones's mother.两个少年闯进了琼斯先生的母亲家里行窃。The teenagers shook their lon...
Teenagers are forced to study subjects that seem remote from their daily lives.青少年被迫学习和他们的日常生活关系不大的学科。Li blends right into the crowd of teenagers. Only his accent sets him apart.李完全融入到这群青少年当中，只有他的口音跟他们不一样。Five out of the...
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...