名词
中文翻译:Unknown
同义词:
['hollow', 'hollowed-out', 'void']
例句:
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1. The tree was hollow and could be easily broken.
这棵树是空心的,很容易折断。
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2. The hollowed-out space is filled with sand.
这个空心的空间里装满了沙子。
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3. The void in the center of the earth holds the weight of the moon.
地球中心的空洞承载着月亮的重量。