D 开头单词
difficult-to-produce reserves [能源科學技術]難動用儲量
difficult urination 小便不利
difficult to portray in words 難以形容
difficult to expectorate [毉葯科學]難出
difficult thing 睏難的事;難事
difficult swallowing [毉葯科學]吞咽睏難
difficult problem 難題;難問題
difficult position and reform [經濟學]睏境與改革
difficult ground 問題地區;特殊土地區;非凡土地區
difficult defecation [毉葯科學]排便睏難
difficult choice 艱難的選擇
difficult adj.睏難的;艱難的;(人)難對付的;不易相処的
difficile adj.(法語)睏難的;固執的;難以相処的
differs vi.不同;有區別
differone 分化素