She had to made a desperate attempt to leave her husband so she left underthecoverofnight.
她只能孤注一掷，离开她的丈夫，所以她趁着夜色跑了。
2
They are excellent trackers, scouts, and archers, moving freely through the countryside underthecoverofnight.
他们是卓越的追踪者、侦察兵和射手，可以在夜色的掩护下自由地出没于乡间。
3
And he judged of others by himself, not believing in what he saw, and always believing that every man had his real, most interesting life underthecoverof secrecy and underthecoverofnight.