零是样本中观察到的数据。作为预测，不是那么绝对，可能有例外。

来源: solo1 于 2024-08-22 04:35:58 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.