形容词
中文翻译：Unknown
同义词：
['impassable', 'inaccessible', "insurmountable例句：1. The river is so deep that it's innavigable for most boats.（这条河太深了，大多数船只都无法航行。）2. The mountain was innavigable", 'and we had to turn back.（那座山难以通行，我们不得不返回。）']
例句：
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1. The river is so deep that it's innavigable for most boats.
这条河太深了，大多数船只都无法航行。
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2. The mountain was innavigable, and we had to turn back.
那座山难以通行，我们不得不返回。
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3.The road was innavigable, and we had to find another way.
那条路难以通行，我们不得不另寻路径。