invisibly
/ɪnˈvɪzəbli/ 13in a way that cannot be seen or perceived. "an invisibly mended button"
adverb [方式副词]看不见地；看不出地
He looked at me and nodded, almost invisibly. 他看着我点了点头，几乎让人看不出来。
单词造句:
He looked at me and nodded, almost invisibly. 他看着我点了点头，几乎让人看不出来。