1. Manage the cleanliness, tidiness, storage conditions, security and safety of the warehouse. 负责仓库的保密、安全、保证清洁卫生的仓储环境。
2. The objective of sand reclamation is make good casting, not to reclaim sand to a given level of cleanliness. 砂再生的目的是用再生砂生产出好铸件，而不是将砂再生到指定的干净程度。
3. Keep clean. Here we mean personal cleanliness, cleanliness in the home and at work place, and a clean surrounding. 保持清洁。这里我们说的是个人清洁，家中及工作地点的清洁和环境清洁。
英英解释
n.
1. the habit of keeping free of superficial imperfections
2. diligence in keeping clean
