摸 ㄇㄛ mō 爬 ㄆㄚ ˊ pá 滚 ㄍㄨㄣ ˇ gǔn 打 ㄉㄚ ˇ dǎ 摸 ㄇㄛ mō 爬 ㄆㄚ ˊ pá 滾 ㄍㄨㄣ ˇ gǔn 打 ㄉㄚ ˇ dǎ to go through challenging experiences to become seasoned (in one's profession etc)