如何预防水桶里长青苔呢？
How to prevent the growth of moss in the bucket?
1、避免阳光照射，因为绿藻的生长主要是由光合作用产生的。
1. Avoid sunlight, because the growth of green algae is mainly produced by photosynthesis.
2、室内空气要保持流通，水桶的使用存放处要求是阴凉、通风、干燥、避光，减少菌藻污染。
2. The indoor air shall be kept in circulation, and the use and storage place of the bucket shall be cool, ventilated, dry and dark, so as to reduce the pollution of bacteria and algae.
3、尽量每天都饮用，保持流通。
3. Try to drink every day to keep circulation.
4、接水后应尽快喝完，最佳饮用期应在5天以内。
4. Drink up the water as soon as possible, and the best drinking period should be within 5 days.
5、水桶要定期清洗和消毒。
5. The buckets should be cleaned and disinfected regularly.