名词
中文翻译：床板
同义词：
['bed frame', 'bedstead', 'bed topper']
例句：
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1. The old wooden bed frame has been in the family for generations.
这个旧木床架已经传了好几代了。
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2. The new bed topper is a great improvement over the old one.
新的床垫比旧的好多了。
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3. The old bed frame was too uncomfortable to sleep on.
旧的床架睡起来太不舒服了。