unnavigable

基本解釋

"We see the foundations wearing away, the stone steps crumbling, the unnavigable canals.
他說：“我們眼看著地基逐漸磨損，石頭臺(tái)階碎裂，河道也不再通航。”
It is 822 mi (1,323 km) long.It is torrential for most of its course and is unnavigable.
它長約822哩（1,323公里），由于其大部分河段皆湍急洶涌，故難以航行。
Corporate Websites: I recently co-judged a competition of nominated best-of-class business websites, and I was aghast at how unnavigable and useless most of them were.
企業(yè)類網(wǎng)站: 近期我參與了一項(xiàng)最佳商業(yè)網(wǎng)站的評(píng)委工作，卻驚奇地發(fā)現(xiàn)這些網(wǎng)站中的大多數(shù)都是不能正常運(yùn)行或者毫無價(jià)值的。
unnavigable river
不通航河流