A common mistake to avoid (both in describing the results and in drawing conclusions) is the confusion of 'no evidence of an effect' with 'evidence of no effect'.
应避免一个的常见的错误（无论是描述结果还是获得结论）是混淆“效果无证据”和“无效的证据”。
Then the contradictory announcement law, with "mistake" drawing "understanding" law and classroom discussion law are also used to create the question-situation.
在化学教学的讲课当中，采用矛盾揭示法、以“误”引“悟”法和课堂讨论法创设问题情境；
After implementing the concrete algorithm to the master drawing, its hide codes can be all drawing out with none mistake.
经过对样图进行具体的算法实施，其嵌入编码都能被正确无误地提取出来。
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