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Cautious/cautionary

这两个词都带有cau,与caution有关，但其含义不一样，不能彼此替换。

Cautious的意思是careful; hesitant，即小心的；谨慎的 例句：The government has been cautious in its response to the report.

Cautionary的意思是warning 警告的；告诫的 例句：In her conclusion, the author sounds a cautionary note. (敲响警钟)

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