Coal and steel were the region's lifeblood.煤炭和钢铁曾是这个地区的生命线。Small businesses are the lifeblood of the economy.小型企业是经济的生命力所在。Tourism is the lifeblood of the city.旅游业是这座城市的命脉。...
卡车倒车和掉头的时候,我听见发动机的轰鸣声。I heard the engines revving as the lorries backed and turned.阿诺德关掉发动机,下了车。Arnold stopped the engine and got out of the car.上校命令道:“尽快给我找两台性能好的发动机来。”The colonel ordered, "I want two good engines down ...