从前有个 烧炭 人, 独自一人生活和工作.There was once a Charcoal - Burner , who lived and worked by himself.从那以后, 烧炭工人离下岗就不远了.From that point onward, the charcoal - burners'days were numbered.冯先生在三月曾试过烧炭自杀.Fung had tried to commIt�...
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...