1. maintains no relationship with A
2.maintains a "one to many" relationship with A
3.The relationship can be described with a has-a clause
4.The relationship can be described with an is-a clause
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题目怎么翻译呢??求救~
1. maintains no relationship with A 2.maintains a "one to many" relationship with A 3.The relationship can be described with a has-a clause 4.The relationship can be described with an is-a clause