CONNECT _ BY _ ISLEAF返回一个设置为0或1的小整数值。
CONNECT_BY_ISLEAF returns a small integer value that is set either to 0 or 1.
CONNECT _ BY _ ISCYCLE返回一个设置为0(未检测到循环)或1(检测到循环)的小整数值。
CONNECT_BY_ISCYCLE returns a small integer value that is set to either 0 (no cycle detected) or 1 (cycle detected).
这里，α和β是什么，他们的数值是多少，是动理学测量的结果,一般来说它们是小的整数。
Now, alpha and beta, what they are, what they turn out to be, is typically what's determined as a result of kinetic measurement. Typically they're small integers.
如果该参数是一个或小，它返回一个整数值。
If the argument is one or smaller, it returns the integer value one.
如果该参数是一个或小，它返回一个整数值。
If the argument is one or smaller, it returns the integer value one.
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