cleaning pens
清洁笔
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Precautions involve cleaning duck pens, heat preservation, inoculation of Bang's bacillus.
以作好鸭舍清洁卫生、保温、接种鸭疫巴氏杆菌为主要预防措施；
youdao
As part of the experience, VIP guests also do their fair share of hosing off the animals in the afternoon and cleaning the panda pens.
BBC: Play one-on-one with a giant panda
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