oversaw动词oversee的过去式形式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overground cable架空电缆Over - voltage过压overwintered egg越冬卵over kill effect过度杀灭效应over competition过度竞争overaged product过剩产品over-finishing肥育过度overburden depth覆盖深度over anaphylaxis过度敏感性overmatureration过分成熟