Undergrounding
(underground 的现在分词) n. 地下, 地铁, 地道, 秘密活动\\na. 地下的, 秘密的\\nadv. 在地下, 秘密地
🗣️ 情景例句
Maybe.
也许是。
That's fine.
好得很。
and another group were disturbed for an equal period of time but when they were no exhibiting eye-movements,
另一组人也是连续几夜被叫醒，但是在眼球队没活动时被叫醒的。