trick of the trade
行业诀窍；专业技能或秘诀
口语·分享专业经验
英文释义
an expert technique or method that is used in a specific profession or field
例句
My mentor taught me a few tricks of the trade for closing deals faster.
典故来源
源自中世纪手工业行会，师傅传授给学徒的独特技巧。