Officials say that one or two engines fell away from the plane shortly after takeoff.官员们说飞机起飞后不久就有一两台引擎脱落了。And , O you mortal engines , whose rude throats The immortal Jove's dead clamours counterfeit , Farewell!还有你...
The snowfall was becoming heavier ; it was sticking to the ground now.雪是愈下愈密了, 街上已经见白.Only an exceptionally heavy snowfall might temporarily dislocate railway services.只有非同寻常的大雪才可能暂时打乱铁路运行.Washington's Mount Rainier...
Assistance in diagnosis is provided by serology.血清学提供辅助诊断.Method Making use of electron microscope and serology.方法采用电镜检查和病毒血清试验.Methods Isolation of Rickettsia tsutsugamushi by animal, serology indentification, rest of v...