题目内容
n. medical treatment of injuries or diseases that involves cutting open a person's body and often removing or replacing some parts
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n. a part of a piece of clothing that covers all or part of your arm
n. the act of separating people or things; the state of being separate; a period of time that people spend apart from each other
vi. to become, and continue to be, successful, strong, healthy, etc.
n. a small sharp pointed part on the stem of some plants, such as roses
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