... [ be sure ] 自信，很有把握地说 [ definite reason ] 确定无疑的说法 [ short story ] 字数较少，篇幅不长，人物不多，结构紧凑的小说 ...
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确定无疑的说法
A definitive statement
以上为机器翻译结果，长、整句建议使用 人工翻译 。
从品质上说，毫无疑问，施行高税额已经减少了抽烟现象，但是就是如此说法，从统计学观点来看也很难确定究竟是什么导致了真正的减少。
Qualitatively there is no doubt that higher taxes have reduced smoking, but with that said, it's very difficult from a statistical standpoint to figure out what caused the real reduction.
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