1. First assign the variable, then concatenate and then run it. ���ȷ����˱�����Ȼ�������ӣ�Ȼ�������С�
2. Is the initialization of a variable consistent with its memory type? ����Ƿ�����ij�ʼ���������ڴ�����һ�¡�
3. The radiation radius of the radioactive radium radiator in the stadium is variable. �������ů��װ�õķ���뾶�����������ױ�ġ�
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n.
1. something that is likely to vary; something that is subject to variation
2. a quantity that can assume any of a set of values
3. a star that varies noticeably in brightness
4. a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable q adj.
1. liable to or capable of change
2. marked by diversity or difference
3. (used of a device) designed so that a property (as e.g. light) can be varied
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