论文摘要 中文翻译为英文 急急急！！！

摘要已翻好，绝对放心采用，不过楼主能加到50分吗？
摘要：一系列的发动机技术有助于改善汽车的性能，而更好的公交汽车设计可以增加公交汽车的载运能力、改善其耐久性并延长其使用寿命。本文讨论了城市公共汽车的各种驱动系统和各种燃料选择方案包括在未来的选择，其中重点分析了柴油、压缩天然气、液化天然气、二甲醇、混合电动以及燃料电池系统。
Abstract:A series of engine technologies is helpful for the performance improvement of automobiles, and the better design of transit buses can increase the carrying capacity of the buses, improve the durability and prolong the lifetime of them. This article discusses various driving systems and fuel selection schemes, including their future selection, of which diesel oil, compressed natural gas, liquified natural gas,dimethanol, hybrid electric drive, and fuel cell are analyzed emphatically.

摘要：一系列的发动机技术有助于改善汽车的性能，而更好的公交汽车设计可以增加公交汽车的载运能力、改善其耐久性并延长其使用寿命。本文讨论了城市公共汽车的各种驱动系统和各种燃料选择方案包括在未来的选择，其中重点分析了柴油、压缩天然气、液化天然气、二甲醇、混合电动以及燃料电池系统
Abstract A series of engine technologies are helpful to improve the car's performance and better bus design could increasesthe bus's ship capbility and prolongs its life-