Fifty-litre carboy would be the most economical size. Carboys may be retained without charge for two months.
50升的瓶子应是最经济的尺码,这些瓶子可免费保存两个月。
No, say the American: our fowl are fine, we simply clean them in a different way.
不,美国人说,我们的家禽很好,只是我们使用了另一种清洗方式。