中国大学MOOC: What does a symbol of shipping mark cannot be?
举一反三
- What does a symbol of shipping mark cannot be?
- 中国大学MOOC: What are the four elements that should be included in an ISO standard shipping mark?
- What does a symbol usually contains?
- What does black color usually（）(symbol) in literature
- 中国大学MOOC: Besides the “phoenix”, what is the other main recurring symbol in the story?