dour
词根词缀：
dour adj. 性情冷酷的
dour〔= dur〕持久；坚硬的 →〔心肠〕硬 → 性情冷酷的
durable adj. 持久的
dur 持久；坚硬的 + able …的 → 持久的
duration n. 持续时间
dur 持久；坚硬的 + ation 行为，过程，状态，结果 → 持续时间
during prep. 在…期间
dur 持久；坚硬的 + ing 正… → 持续时间 → 在…期间
endurance n. 忍耐力
endure的名词
endure v. 持久，耐久
en 使… + dur 持久；坚硬的 + e → 持久，耐久
indurate v. 使坚硬，使坚固
in 使… + dur 持久；坚硬的 + ate 使… → 使坚硬，使坚固
obdurate adj. 顽固的，执拗的
ob 加强 + dur 持久；坚硬的 + ate 具有…的，有…性质的 → 一再坚持 → 顽固的
perdure v. 持久；永存
per 自始至终 + dur 持久；坚硬的 + e → 自始至终地坚持如一 → 永存
数据来源：新东方英语词汇速记大全
相关例句：
Ravel Morrison settled a dour encounter with Bolton in the Manchester Senior Cup with a jet-propelled strike in the94th minute.
拉威尔。莫里森在曼彻斯特高级杯上用一脚94分钟的火箭球绝杀博尔顿。
It was like a late twilight under clouds at the end of November, a dour, chill, dull air in which one could see, but not clearly and not far.
仿佛身处十一月末一个为乌云笼罩的傍晚，萧瑟、阴冷、暗淡的空气中，人的视线模糊不能及远。
However, more dour adults may be put off by the lack of environmental concern shown in this film.
不过，更多严厉的成年人也许会因片中那些缺乏环保意识的场景而有反感之意。
In spite dour warnings, he decided to invest in, that venture. I suppose it's case of fools rushing in where angels fear to tread.
尽管我们都警告他还是决定投资那桩冒险生意，我想这就是蠢人爱鲁莽行事。
Istanbul was a bit of a freaky game. Do you think this one is going to revert back to the dour old English-Italian one-goal-in-it affair?
伊斯坦布尔决赛有点偏离常规。你认为这一次将恢复到保守的英格兰－大利式一球决胜？
Meantime, that's a real love feast down. The person you are addressing is rather dour and matter-of-fact.
现在，一次名副其实的联谊晚会正在楼下进行。与你联系的人相当顽固并一副公事公办的姿态。