An additional metabolic characteristic associated with the growth and toxin production of Clostridium botulinum is gas production. 另外与肉毒杆菌的生长与产毒相关的代谢特征是气体的产生。
To make stars you need colossal clouds of frigid gas that will collapse to begin star-producing nuclear reactions. 恒星的形成需要大团的寒冷气体发生塌缩，以便开动创造恒星所需的核反应。
