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。
The dish now had to be lifted vertically because one edge was resting against the side of the canal.
这次,盘子必须垂直吊出水面,因为盘子的一边紧靠着运河河岸。