意味: せんこうすれv. (Kanji=専攻する) major, specialize in a certain field of studyv. (Kanji=先行する) precede, come before, go beforev. (Kanji=先攻する) bat first, attack first (Sports, Game)v. (Kanji=穿孔する) hollow, excavate, dig out, make hollow, punch, perforatev. (Kanji=潜行する) go undergroundv. (Kanji=潜航する) dive, go underwater