四明湖:篮球up and under意思的什么？

篮球up and under意思的什么？ unsettled credit and debt under Purchase Order什么意思啊？ 请问and under the direction后面的意思?? under wear 什么意思? ---Open your mouth and shut up.什么意思 this site is under construction and be available soon的中文意思 study under sb.什么意思? under my skin什么意思 Under ground的意思？谢谢 请问under tand什么意思谢谢！