1.for some unknown and usually puzzling reason
1.Nine minutes later, miraculously and unaccountably, he returned to life to tell of his amazing near-death experience in the afterlife.
在他死后九分钟，他无法解释地奇迹般生还，述说了自己濒死体验。
2.she had known that the sight of Matthew jaunting off so unaccountably would be too much for her neighbour's curiosity.
马修莫明其妙地驾车出门这一景象，对她的邻居的好奇心是个刺激。
3.But the Emperor had been so unaccountably rapid over getting dressed and coming in that he had not time to have the surprise ready for him.
不料皇帝这么快就穿好衣服走了出来，以致他来不及完全布置好这一惊人的场面。
4.from dizziness and exhaustion, yet, unaccountably, the adrenaline began to pump and his mind ran sharp.
他本应由于眩晕和疲惫而晕头转向，然而，无法解释的是，肾上腺素开始分泌，他的头脑变得敏锐了。
5.Unaccountably, won this lawsuit, as well as lost it last time; Hansen's lawyer can't lift up his head, and feels much vexed and gloomy!
莫名其妙地赢得这场官司，和当初莫名其妙地输掉一样，翰森的律师心里高兴不起来，窝囊沮丧得很！
6.He was unaccountably pleased to have found the answer to his conundrum so quickly .
这么迅速就找到这个难题的答案，他莫明其妙地高兴起来。
7.She was 82 and living in Keoluk when, unaccountably , she insisted upon attending a convention of old settlers of the Mississippi Valley.
那年她82岁，住在克勒克城，不知为何，她坚持要参加密西西比河谷的老居民大会。
8.On the other side he could easily have overtaken her, but he found himself lagging unaccountably.
另一方面，他很可能已经超过了她，但他发现自己落后莫名其妙
9.But when life hands us a few empty hours, we squirm, wriggle, dodge, and feel unaccountably lazy.
但当生活给了我们几小时，我们就局促不安、挣扎、躲避、感到自己无可名状地“懒惰”。
10.Quite unaccountably he flew into a rage.
他~地发起脾气。