有一半的机会;正反各半的可能性
have an even chance (of doing sth)
(做某事)有一半的机会;正反各半的可能性
to be equally likely to do or not do sth
She has more than an even chance of winning tomorrow.她明天多半会赢。
释义来自《牛津高阶英汉双解词典》第 9 版