Hints: 本期学习的字源：und=flo,overflow流动、泛滥 Taiwan Yangtze River 单词不需要大写，单词与例句或不同词条之间换行即可。 注解中详细介绍了单词的拆分与释义，是学习字源分析的重中之重！一定记得听写后来看注解！
abundant undulate From the top of the hill, you can see undulating fields stretching to the horizon. abound The waters around Taiwan abound in fish. inundate Millions of acres of land were inundated in last year's Yangtze River floods. redundant The word "most" in the expression "most extreme" is quite redundant.
From the top of the hill, you can see undulating fields stretching to the horizon. 站在山丘上，你可以看到起伏的原野绵延到天边。 The waters around Taiwan abound in fish. 台湾沿海水域富于渔产。 Millions of acres of land were inundated in last year's Yangtze River floods. 几百万英亩的陆地在去年长江洪水中淹没。 The word "most" in the expression "most extreme" is quite redundant. “最极端”一词中的“最”字完全是多余的。