重點講解：
1. the volume of
量；數額；
eg. The volume of passenger travel on the railways is increasing again.
鐵路的客運量又在日益增加。
eg. We needed to increase the volume of production.
我們需要提高產量。
2. run down
（車輛）把…撞傷，撞倒；
eg. Lozano claimed that motorcycle driver Clement Lloyd was trying to run him down.
洛扎諾聲稱克萊門特·勞埃德騎著摩托車想把他撞傷。
eg. The old man was run down by a big lorry.
那個老人被一輛大卡車撞倒了。
3. on earth
（用于以how， why， what 或 where 開始的問句，表示強調，通常表示問題沒有答案或很難回答）究竟，到底；
eg. How on earth did you know it?
你到底是怎么知道的？
eg. Why on earth didn't you tell me the truth?
你到底為什么不跟我說實話？