基本解释adj.连续24小时的(昼夜的)同根派生 英汉例句It has happened before, in Somalia in 1993 for example, but never was there this level of roundtheclock coverage of each roadblock and minor setback 这种事情以前就发生过，比如1993年在索马里，但从来没有像这次这样全天候的报道每一个路障和每一次微小的挫折。