Cholera is a bacterial infection.霍乱是一种细菌感染。Bacterial reproduction is accelerated in weightless space.在失重的空间,细菌繁殖加快了.Brain lesions can be caused by bacterial infections.大脑损伤可能由细菌感染引起....
The nonrigid helium - filled Blimp was principally developed by Alberto Santos - Dumont ( 1873 - 1932 ) .软式充填氦气的飞船主要是由桑托斯- 杜蒙特 发展改进.The gray oval is a blimp.灰色椭圆形是小型飞船.Scientists in the blimp did not see anything.小飞艇上的科学...