一 . 将以下单词翻译成英文 1. 车头 2. 车身 3 车门 4. 地铁车辆 5. 车辆设别 6. 车辆维护 7. 车钩缓冲器 8. 转向架 二 . 以下对话翻译成中文 ((David is from America. He is talking about the subway train with Mr. Zhang. ) David : Could you introduce the classification of Shanghai Subway? Mr. Zhang: Well, most of trains are 6-car unit . But trains of Line 1 are 8-car unit because of great capacity. David : Are they motor cars or trailers ? Mr. Zhang : Each car is a motor car. David : Then how can they get electricity power? Mr. Zhang : The pantograph works. David : How are the opening and closing of doors controlled? Mr. Zhang : Doors are controlled by the TO in the cab . When there is a metro barrier door, the control is synchronous. David : Wow! What an advanced vehicle system!