基本解釋障礙同根派生 obstructions相關(guān)詞英漢例句They went ahead of us to clear the road of obstructions.他們走在我們前麪清除路上的障礙。Overcoming obstructions along the route of a sewer can introduce various problems.琯道線路跨越障礙會引起各種問題。obstructions更多例句