submarined怎么读？

The Germans submarined the allies.德国人以潜艇袭击盟军.The child was injured when he submarined under the safety belt of the car.在这个孩子从汽车安全带下面滑脱出去时,他受伤了....

vt.用潜艇攻击（submarine的过去式与过去分词形式）...