[transitive]lance somethingto cut open an infected place on somebody’s body with a sharp knife in order to let out the pus (= a yellow substance produced by infection)用刀切开(感染处放脓)
to lance an abscess切开脓肿
[intransitive]+ adv./prep.(of a pain疼痛)to move suddenly and quickly and be very sharp突然迅速传导;突然剧烈起来