tricks of the trade
US /trɪks əv ðə treɪd/
UK /trɪks əv ðə treɪd/

1.
行业诀窍, 秘诀
clever methods or special techniques used by people in a particular profession or activity, often not widely known
:
•
He learned all the tricks of the trade from his mentor.
他从导师那里学到了所有的行业诀窍。
•
Knowing the tricks of the trade can save you a lot of time.
了解行业诀窍可以为你节省大量时间。