P190）这是一个否定肯定式的选言推理，清晰而严密。
This is negative-affirmative reasoning in a clear and consistent manner.
与第一步推理一样，(二)(三)两步都是形式相同的否定肯定式的选言推理。
Like the first step of reasoning, step 2 and 3 employ the same negative-affirmative reasoning.
年轻作家使用更多的否定式和过去式词汇，而年长的作家使用更多的肯定式和未来式词汇。
Younger writers use more negative and past-tense words than older writers who use more positive and future-tense words.
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