After 3-4 days, most patients improve and symptoms disappear.

在3 - 4天之后，多数病人好转，症状消失。

youdao

Most patients improve and their symptoms disappear after 3 to 4 days.

3至4天之后，多数病人会出现好转，症状随之消失。

youdao

For most of these women, signs and symptoms disappear as the menstrual period begins.

而这些女性中，大多数人的体征和症状会在经前综合症开始后消失。

youdao

Sometimes, symptoms of the disease appear and then disappear for a long time.

VOA: special.2009.01.06

If a pilgrim exhibits symptoms, they will be quarantined until the symptoms disappear.

CNN: The Hajj: A perfect storm for swine flu?

Their theory is that single doses of Fansidar reduce a child's load of the parasite to the point where the symptoms disappear.

ECONOMIST: Malaria research gets a shot in the arm

"It's not magic, " Ecker cautioned, saying few women see their symptoms completely disappear with the medication.

NPR: FDA Approves Return Of Drug For Morning Sickness