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 to be of help 無以爲力

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 position 睏境

difficult point 難點

difficult menstruation 月經睏難

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.)

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