2. The source of the allusion is the first part of Ai Xuan's "Wind and Thunder in the Great River": "The military flag has not been unfolded and is wrapped in a gray-yellow tarpaulin flag cover."
3. Application example Liu Sifen's "White Gate Willow Sunset Grass" Chapter 7: "Although the appearance is sloppy, the poem is well written and the calligraphy is learned."
4. Synonym sloppy. More refers to people who are lazy and do not pay attention to hygiene. Describe people as unclean and clumsy. This is what we often mean by sloppy, dirty and so on.