the prototype of the modern bicycle现代自行车的雏形Metal - wheeled chariots are the prototype of the tanks of modern warfare.金属轮战车是现代战争中坦克的原型.He flew the prototype to West Raynham to demonstrate it to a group of senior officers....
The big factories are trying to stay alive by cutting costs.大型工厂正试图通过削减成本以维持生存。He has worked as a labourer in factories and on building sites.他在工厂和建筑工地干过苦工。Many are employed in the prison's wood and metalwork factor...
The two principal combustion products are water vapor and carbon dioxide.两种主要的燃烧产物是水蒸气和二氧化碳。City's principal marksman was Joe Harvey who scored seventeen goals.市队的头号射手是打进17粒进球的乔·哈维。Donald King is the principal of Da...