translation.en: The fuel cell looked great: one-tenth as many moving parts and a fuel-cell propulsion system as an internal combustion engine -- and it emits just water.
translation.zh: 燃料电池似乎不错 只有其他许多移动部件的十分之一大 并且燃料电池推进系统作为内燃机 仅仅释放出水而已