The blood rushes to your face (and sometimes other body parts), giving you that beet-red color.
血液涌进脸部(有时是身体其他部位)，使你的脸变得通红。
2
She went red as a beet.
她的脸涨得通红。
《牛津词典》
3
Today, as I walked away from the airport gate alone with my head held high and eyes beetred from crying, I knew at that moment what it meant to be a military wife.