西班牙流感的大爆发夺去了全球近2,200万人的生命。One pandemic of Spanish flu took nearly 22 million lives worldwide.这种疾病今年已夺去了数千秘鲁人的生命。The disease has killed thousands of Peruvians this year.每年香烟夺去10万多英国人的生命。Cigarettes kill over a hundred thou...
If the engine backfires , the sudden pressure in the intake manifold forces the valve back.如果发动机回火, 进气歧管骤增的压力就迫使阀门向后移动.Also , this is why changing menus dynamically sometimes backfires.这就是为什么动态地改变菜单有时候事与愿违.My old car bac...