难以描述(或找到、达到、记起)地in a way that is difficult to describe, find, achieve, or remember
He remained elusively in the background all evening. 整个晚上他都待在背景中。
"Oh, it just depends if it's a good day or a bad day," she said elusively. “哦,这就取决于是好日子还是坏日子了,”她让人难以捉摸地说道。
See: elusive