Rescue services have been working roundtheclock to free stranded motorists.
救援工作一直在昼夜不停地进行着，来解救被困的开车的人们。
《柯林斯英汉双解大词典》
2
His parents kept a round-the-clock vigil at his bedside.
他父母日夜守护在他的床边。
《牛津词典》
3
Men, these days, are embracing fatherhood with theround-the-clock involvement their partners have always dreamed of—handling night feedings, packing lunches and bandaging knees.