形容词
中文翻译：较低的
同义词：
['downer', 'inferior', 'low']
例句：
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1. The lower part of the building is unfinished.
这座建筑的下部还未完工。
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2. The lower class has fewer rights than the upper class.
下层阶级的权利少于上层阶级。
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3. The lower part of the river flows through a narrow canyon.
河流的较低部分穿过一个狭窄的峡谷。