reason
n. /ˈriːzn/ A1
原因；理由；理智
A cause or explanation for an action, fact, or event.
原著这一句
Here was another puzzling question; and as Alice could not think of any good reason, and as the Caterpillar seemed to be in a very unpleasant state of mind, she turned away.
这又是一个让人回答不上来的问题。爱丽丝想不出什么好理由，又觉得毛毛虫脾气很不好，便转身走开了。
卡罗尔原著 · 第 5 章