off the rails

汉语翻译

例句：

1. I would never have guessed that Mary of all people would go off the rails, and her she is seeing another man behind Jim's back.
   我过去绝不会猜到，偏偏是玛丽会行为越轨，竟然背着吉姆与另一个男人幽会。
2. My son did go off the rails for a while in his late teens but he has settled with a family.
   我儿子年轻时确实有些越轨行为，但现在安下心来，并已结婚成家。
3. He thought he was going off the rails when he saw a strange animal sitting in the middle of the road.
   当他看到路中间坐着一只怪兽时，他还以为自己的脑袋出毛病了。
4. Our schedule went completely off the rails during the strike.
   我们的预定计画在罢工期间完全被打乱了。