单词	unpassable
释义	unpassable /ʌnˈpɑːsəb(ə)l / adjective Impossible to travel along or over; impassable: some roads are completely unpassable because of flood waters... In the dry season it is arid, in the wet season it is an unpassable swamp. Others travelled northeast from Europe in search of an equally fabled, but also unpassable, arctic passage along Russia's northern coast. Tradesmen and people dumping household waste have made the track to his mother's house almost unpassable.
随便看	silica gel silicate siliceous silicic silicic acid siliciclastic silicide silicification silicify silicoflagellate silicon silicon carbide silicon chip silicone siliconise siliconize Silicon Valley silicosis silicotic siliqua silique siliquose siliquous silk silk cotton

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