股票的价值在某一特定的时期内会有涨跌。Over a given period, the value of shares will rise and fall.我们期盼着他某一天再回家。We were expecting him home again any day now.她跟某一同事有染。She was having an affair with someone at work....

“某一”的英语可以翻译为：a certain，one，such ...