The floods were a cataclysm from which the local people never recovered.经历了这场特大洪水,当地人民元气大伤,很难恢复.The extinct volcano’s eruption would mean a cataclysm for the city.死火山又重新喷发,对这座城市来说意味着大难临头。The cataclysm flooded the entire ...
Helicobacter pylori is a spiral Gram's negative bacterium, living in microaerophilic environment.幽门杆菌是一只革兰氏阴性螺旋菌, 生活在微需氧的环境下.Excuse me the following bacterium of screw of which formulary and eradicative pylorus is b...