An interesting observation is that Action is a class and not an interface.
(一个有趣的发现是，Action是类而不是接口)。
New class sign; Thesis teaching; Foothold textbook; Observation accumulation; Feeling life.
新课标；作文教学；立足课本；观察积累；感受生活。
New class sign; Thesis teaching; Foothold textbook; Observation accumulation; Feeling life.
新课标；作文教学；立足课本；观察积累；感受生活。
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