对于保持在厌氧的条件下的密封良好的容器，气体的产生足够引起肉眼可见的胖听。

For tightly sealed containers that maintain anaerobic conditions, the gas production is sufficient to cause visible swelling of the container.

youdao

月亮为什么有时胖，有时瘦呢？它有时听妈妈的话，好好吃饭；有时淘气，不好好吃饭。

Why does the moon sometimes become fat, and sometimes thin? Because it sometimes waits for the mummy's reply, and eat much; sometimes it is naughty, and eat less.

youdao

月亮为什么有时胖，有时瘦呢？它有时听妈妈的话，好好吃饭；有时淘气，不好好吃饭。

Why does the moon sometimes become fat, and sometimes thin? Because it sometimes waits for the mummy's reply, and eat much; sometimes it is naughty, and eat less.

youdao