To enshroud something is to cover or surround it so that you cannot see it clearly — or, more often in careful writing, so that you cannot understand or explain it. Fog enshrouds a hill; mystery enshrouds a family's past; silence can enshroud a room after bad news. It is literary; everyday English says cover, hide, or surround. A shroud is the cloth wrapped around a dead body, and also any covering that hides; this verb is 'put into a shroud'. Though actually, writers stretch it a long way from cloth: they enshroud facts in jargon, or a scandal in secrecy — nothing you could hold in your hands, only the feeling of not being able to get at the truth. It is stronger and a little darker than cover, and it often suggests that the hiding is complete, not a thin veil.

籠罩、掩蓋（到看不清，或說不明白）