unaccountably

adv.不可解释地,不能说明地,无责任的

无法解释地；无故地

副词

1、The car unaccountably veered off the road and crashed into a tree.
这辆车莫名其妙地突然偏离道路，撞上了一棵树。
2、He unaccountably forgot to pick up his daughter from school.
他莫名其妙地忘记接女儿放学。