When not in use it folds up out of the way.不用时就折起放好。The fortress was proof against the techniques of attack then in use.该防御工事能抵御当时所使用的各种进攻手段。a piece of land in use as a tank testing ground用作坦克试验场的一块土地...

在使用中...

in use的音标：in use的英式发音音标为：[in ju:z]in use的美式发音音标为：[ɪn juz]...