[计] delete after current position

shān chú dāng qián wèi zhì yǐ hòu de nèi róng ㄕㄢ ㄔㄨˊ ㄉㄤ ㄑㄧㄢˊ ㄨㄟˋ ㄓˋ ㄧˇ ㄏㄡˋ ㄉㄜ˙ ㄋㄟˋ ㄖㄨㄥˊ