●ˌlock ˈonto sth ( ˌlock ˈin on sth) if a weapon that is sent through the air locks onto sth or is locked onto sth that it is aimed at, it finds it and follows it(武器)搜寻跟踪,锁定(攻击目标)◆The missile can lock onto a target from a kilometre away. 导弹能锁定一公里之外的目标。◆The missile was locked onto the target. 导弹锁定了目标。SUBJmissile OBJtarget[v + prep][v + adv + prep]