短语词组短語Drainage unobstructed 引流通暢unobstructed detail 交通airway unobstructed 氣道通暢unobstructed passage 通行無阻Logistics Unobstructed 物流通暢unobstructed vision 無障礙眡界clear unobstructed 暢通的;無阻的unobstructed capacity 淨內容積 返回 unobstructed