know-how
n. 訣竅; 實際知識; 專門技能; 專有技術
Know-how is knowledge of the methods or techniques of doing something, especially something technical or practical.
He hasn't got the know-how to run a farm.
他沒有經營農場的專業知識。
...technical know-how.
專業技術知識
1. the (technical) knowledge and skill required to do something
Sailors know how to wind up a long rope neatly.
水手們知道怎樣把一條大繩利落地纏好.
He doesn't know how to dispose of his spare time.
他不知如何打發空餘時間.
I don't know how to fish.
我不會釣魚.
It is very useful for a person to know how to swim.
對一個人來說會游泳是很有用的.
We must know how to judge people.
我們必須善於識別人.