名词 override:

1. a manually operated device to correct the operation of an automatic device

2. the act of nullifying; making null and void; counteracting or overriding the effect or force of something

overprep.在 ... 的上方；遍及地；在 ... 期间adv.穿过；完全覆盖；结束；落下n.(板球中)每个投球手一次连续所投出的球数overeatvi.吃过量

1. Considerations of safety override all other concerns.
   对安全的考虑压倒一切。
2. A particular value for a variable that is assigned automatically by an operating system and remains in effect unless canceled or overridden by the operator.
   缺省，默认某一变量的特定值，由操作系统自动指定并持续有效，除非操作者取消它或使它无效