形容词
中文翻译：未衬里的
同义词：
['unfinished', 'unfinished例句：1. The house was unlined and had a lot of drafts.（这房子没有衬里，有很多通风口。）']
例句：
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1. The house was unlined and had a lot of drafts.
这房子没有衬里，有很多通风口。
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2.The new car is unlined, so it's more fuel-efficient.
新车没有衬里，所以更省油。
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3.The old building was unlined, which made it difficult to heat.
旧建筑没有衬里，这使得加热变得困难。