形容词
中文翻译：不可导航的
同义词：
['impassable', 'inaccessible', "unnavigable例句：1. The river is so deep that it's unnavigable for most boats.（这条河太深了，大多数船都无法航行。）"]
例句：
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1. The river is so deep that it's unnavigable for most boats.
这条河太深了，大多数船都无法航行。
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2. The mountain was unnavigable due to the heavy snowfall.
由于大雪，这座山无法航行。
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3.The road was unnavigable because of the construction work.
道路因施工而无法航行。