Regularly clean the metal parts with a clean dry cloth to prevent rusting.
经常用干布轻抹金属配件，以防氧化。
Oil the bores after cleaning to prevent rusting.
洗濯后给钻孔上机油以防其生锈。
Cylinders may be stored in the open, but in such cases should be protected against extremes of weather and from damp ground to prevent rusting.
钢瓶可以存放在室外，但应防止受到恶劣天气的影响，同时不能接触潮湿的地面，以防生锈。
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