轴线不能多个复制，只能单个复制。One only can copy axis one by one and cannot realize multiple times.
举一反三
- Which statements of the event listener are true A: Multiple listeners can be attached to one component. B: Only one listener can be attached to one component. C: One listener can receive and process the events from multiple components. D: One listener can receive and process the events from only one component.
- No unfit actually faced with water scarcity ____ appreciate the value of water to a region. A: one can B: one cannot C: can one D: cannot one
- In no country other than Britain, it has been said, （） experience four seasons in the course of a single day. A: one cannot B: one can C: cannot one D: can one
- One cannot be too careful, ______ A: can one B: can he C: can she D: can they
- Only by diligence and honesty __________________. A: one can succeed in life B: can one succeed in life C: one can be succeed in life D: can one be succeed in life